Move all app/os specific utils to specific package

thefuck/rules/git_branch_delete.py

@@ -1,13 +1,14 @@
 from thefuck import utils
 from thefuck.utils import replace_argument
+from thefuck.specific.git import git_support
 
 
-@utils.git_support
+@git_support
 def match(command, settings):
     return ('branch -d' in command.script
             and 'If you are sure you want to delete it' in command.stderr)
 
 
-@utils.git_support
+@git_support
 def get_new_command(command, settings):
     return replace_argument(command.script, '-d', '-D')