Optimize combine.py by removing unused regex (#155)

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>

Author: Ven0m0

RaspberryPi/Scripts/combine.py

@@ -3,7 +3,6 @@
 from pathlib import Path
 
 WORD_PATTERN = re.compile(r"[a-zA-Z0-9]+")
-VALID_WORD_PATTERN = re.compile(r"^[a-zA-Z0-9_.,!?@#$%^&*()-=+ ]+$")
 
 
 def detect_encoding(data: bytes) -> str: