Remove pTokens from the Telos Native code

[Viterbo]

Overview

The pTokens system is no longer functional and needs to be removed from all mentions in the Telos Zero code.

solved in this PR

Tasks

• Remove "Ethereum" references from this section.
• Rename the "tEVM" button to "Telos EVM".
  
• Remove the memo field from the current tEVM section.
  
• Update titles:
  • "EVM Deposit" --> "Telos EVM Deposit"
  • "EVM Width" --> "Telos EVM Withdrawal"
    
    
• Add a message before the token list:
  "If you want to move your TLOS tokens to another blockchain, you first need to send them to the EVM and then use the bridge at https://bridge.telos.net/bridge."
• Remove the pTokens from the user list.
  
• Search the code for references to the following contract names and remove them:
  • xeth.ptokens
  • xbsc.ptokens