build: remove dead python methods and helper (#28884)

script/lib/git.py

@@ -77,25 +77,6 @@ def am(repo, patch_data, threeway=False, directory=None, exclude=None,
       proc.returncode))
 
 
-def apply_patch(repo, patch_path, directory=None, index=False, reverse=False):
-  args = ['git', '-C', repo, 'apply',
-          '--ignore-space-change',
-          '--ignore-whitespace',
-          '--whitespace', 'fix'
-          ]
-  if directory:
-    args += ['--directory', directory]
-  if index:
-    args += ['--index']
-  if reverse:
-    args += ['--reverse']
-  args += ['--', patch_path]
-
-  return_code = subprocess.call(args)
-  applied_successfully = (return_code == 0)
-  return applied_successfully
-
-
 def import_patches(repo, **kwargs):
   """same as am(), but we save the upstream HEAD so we can refer to it when we
   later export patches"""
@@ -107,52 +88,12 @@ def import_patches(repo, **kwargs):
   am(repo=repo, **kwargs)
 
 
-def get_patch(repo, commit_hash):
-  args = ['git', '-C', repo, 'diff-tree',
-          '-p',
-          commit_hash,
-          '--'  # Explicitly tell Git `commit_hash` is a revision, not a path.
-          ]
-
-  return subprocess.check_output(args).decode('utf-8')
-
-
-def get_head_commit(repo):
-  args = ['git', '-C', repo, 'rev-parse', 'HEAD']
-
-  return subprocess.check_output(args).decode('utf-8').strip()
-
-
 def update_ref(repo, ref, newvalue):
   args = ['git', '-C', repo, 'update-ref', ref, newvalue]
 
   return subprocess.check_call(args)
 
 
-def reset(repo):
-  args = ['git', '-C', repo, 'reset']
-
-  subprocess.check_call(args)
-
-
-def commit(repo, author, message):
-  """Commit whatever in the index is now."""
-
-  # Let's setup committer info so git won't complain about it being missing.
-  # TODO: Is there a better way to set committer's name and email?
-  env = os.environ.copy()
-  env['GIT_COMMITTER_NAME'] = 'Anonymous Committer'
-  env['GIT_COMMITTER_EMAIL'] = 'anonymous@electronjs.org'
-
-  args = ['git', '-C', repo, 'commit',
-          '--author', author,
-          '--message', message
-          ]
-
-  return_code = subprocess.call(args, env=env)
-  committed_successfully = (return_code == 0)
-  return committed_successfully
-
 def get_upstream_head(repo):
   args = [
     'git',