_targets: remove obsolete stm32l1 target

[julianuziemblo]

JIRA: RTOS-1181

Description

related:

• remove obsolete stm32l1 target's drivers phoenix-rtos-devices#605
• remove obsolete stm32l1 targets phoenix-rtos-filesystems#158
• remove obsolete stm32l1 target support phoenix-rtos-kernel#715
• remove obsolete stm32l1 target phoenix-rtos-build#249

Motivation and Context

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Chore (refactoring, style fixes, git/CI config, submodule management, no code logic changes) - stm32l1 was not supported anyway - this PR just removes the last remaining mention of its

How Has This Been Tested?

• Already covered by automatic testing.
• New test added: (add PR link here).
• Tested by hand on: (list targets here).

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing linter checks and tests passed.
• My changes generate no new compilation warnings for any of the targets.

Special treatment

• This PR needs additional PRs to work (list the PRs, preferably in merge-order).
• I will merge this PR by myself when appropriate.

[gemini-code-assist]

Summary of Changes

Hello @julianuziemblo, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on a maintenance task to clean up the project's build configurations. It removes all traces of the stm32l1 microcontroller target, which was previously unsupported. This action helps to reduce technical debt and simplify the build system by eliminating dead code and configurations that are no longer relevant.

Highlights

• Target Removal: The obsolete stm32l1 target configuration has been completely removed from the build system, specifically the armv7m3-stm32l152xd variant.
• Codebase Cleanup: This pull request serves as a chore to remove unsupported and unused configuration files, streamlining the project's build targets.

Using Gemini Code Assist

The full guide for Gemini Code Assist can be found on our documentation page, here are some quick tips.

Invoking Gemini

You can request assistance from Gemini at any point by creating a comment using either /gemini <command> or @gemini-code-assist <command>. Below is a summary of the supported commands on the current page.

Feature	Command	Description
Code Review	/gemini review	Performs a code review for the current pull request in its current state.
Pull Request Summary	/gemini summary	Provides a summary of the current pull request in its current state.
Comment	@gemini-code-assist	Responds in comments when explicitly tagged, both in pull request comments and review comments.
Help	/gemini help	Displays a list of available commands.

Customization

To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a .gemini/ folder in the base of the repository. Detailed instructions can be found here.

Limitations & Feedback

Gemini Code Assist may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with 👍 and 👎 on @gemini-code-assist comments. If you're interested in giving your feedback about your experience with Gemini Code Assist for Github and other Google products, sign up here.

You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the Gemini Code Assist IDE Extension.

Footnotes

1. Review the Privacy Notices, Generative AI Prohibited Use Policy, Terms of Service, and learn how to configure Gemini Code Assist in GitHub here. Gemini can make mistakes, so double check it and use code with caution. ↩

[gemini-code-assist]

Code Review

This pull request correctly removes obsolete target configuration files for stm32l1. The deletion of _targets/Makefile.armv7m3-stm32l152xd and _targets/Makefile.armv7m3-stm32l152xe aligns with the stated goal of cleaning up unsupported targets. The change is a straightforward and beneficial cleanup of the build configuration. There are no issues with this change.

[github-actions]

Unit Test Results

9 462 tests  +1 261   8 873 ✅ +1 196   50m 41s ⏱️ + 8m 52s
  561 suites +   82     589 💤 +   65 
    1 files   ±    0       0 ❌ ±    0 

Results for commit f41a18f. ± Comparison against base commit 728bc94.

This pull request removes 207 and adds 1468 tests. Note that renamed tests count towards both.

phoenix-rtos-tests/libc/math ‑ armv7a7-imx6ull-evk:phoenix-rtos-tests/libc/math.math_abs.fabs_special_cond
phoenix-rtos-tests/libc/math ‑ armv7a7-imx6ull-evk:phoenix-rtos-tests/libc/math.math_exp.exp_special_cond
phoenix-rtos-tests/libc/math ‑ armv7a7-imx6ull-evk:phoenix-rtos-tests/libc/math.math_exp.frexp_special_cond
phoenix-rtos-tests/libc/math ‑ armv7a7-imx6ull-evk:phoenix-rtos-tests/libc/math.math_exp.ldexp_special_cond
phoenix-rtos-tests/libc/math ‑ armv7a7-imx6ull-evk:phoenix-rtos-tests/libc/math.math_exp.log10_special_cond
phoenix-rtos-tests/libc/math ‑ armv7a7-imx6ull-evk:phoenix-rtos-tests/libc/math.math_exp.log2_special_cond
phoenix-rtos-tests/libc/math ‑ armv7a7-imx6ull-evk:phoenix-rtos-tests/libc/math.math_exp.log_special_cond
phoenix-rtos-tests/libc/math ‑ armv7a7-imx6ull-evk:phoenix-rtos-tests/libc/math.math_frac.ceil_special_cond
phoenix-rtos-tests/libc/math ‑ armv7a7-imx6ull-evk:phoenix-rtos-tests/libc/math.math_frac.floor_special_cond
phoenix-rtos-tests/libc/math ‑ armv7a7-imx6ull-evk:phoenix-rtos-tests/libc/math.math_frac.fmod_special_cond
…

flash ‑ aarch64a53-zynqmp-qemu:flash
flash ‑ armv7r5f-zynqmp-qemu:flash
phoenix-rtos-tests/cpp/hello-cpp ‑ aarch64a53-zynqmp-qemu:phoenix-rtos-tests/cpp/hello-cpp
phoenix-rtos-tests/initfini/main ‑ aarch64a53-zynqmp-qemu:phoenix-rtos-tests/initfini/main
phoenix-rtos-tests/ioctl/unit ‑ aarch64a53-zynqmp-qemu:phoenix-rtos-tests/ioctl/unit.ioctl.data_in
phoenix-rtos-tests/ioctl/unit ‑ aarch64a53-zynqmp-qemu:phoenix-rtos-tests/ioctl/unit.ioctl.data_in_big
phoenix-rtos-tests/ioctl/unit ‑ aarch64a53-zynqmp-qemu:phoenix-rtos-tests/ioctl/unit.ioctl.data_inout
phoenix-rtos-tests/ioctl/unit ‑ aarch64a53-zynqmp-qemu:phoenix-rtos-tests/ioctl/unit.ioctl.data_inout_big
phoenix-rtos-tests/ioctl/unit ‑ aarch64a53-zynqmp-qemu:phoenix-rtos-tests/ioctl/unit.ioctl.data_out
phoenix-rtos-tests/ioctl/unit ‑ aarch64a53-zynqmp-qemu:phoenix-rtos-tests/ioctl/unit.ioctl.data_out_big
…