Remove unnecessary 'ast' requirement from file

Author: htahir1

qualityflow/requirements.txt

@@ -12,7 +12,7 @@ pytest-cov>=4.0.0,<5.0.0
 coverage>=7.0.0,<8.0.0
 
 # Code Analysis
-ast>=3.9
+# ast is built-in, no need to install
 
 # Git Integration
 gitpython>=3.1.0,<4.0.0