refactor(subfinder): streamline main function and remove SubBrute option

refactor(subbrute): delete subbrute module files
refactor: clean up .gitignore by removing ignored wordlist_example.txt

Author: ayanrajpoot10

.gitignore

@@ -27,7 +27,6 @@ share/python-wheels/
 MANIFEST
 *.txt
 !structure.txt
-!wordlist_example.txt
 
 # PyInstaller
 #  Usually these files are written by a python script from a template