Remove legacy 'hooks.yaml' file support

testing/fixtures.py

@@ -79,11 +79,8 @@ def config_with_local_hooks():
     ))
 
 
-def make_config_from_repo(
-        repo_path, sha=None, hooks=None, check=True, legacy=False,
-):
-    filename = C.MANIFEST_FILE_LEGACY if legacy else C.MANIFEST_FILE
-    manifest = load_manifest(os.path.join(repo_path, filename))
+def make_config_from_repo(repo_path, sha=None, hooks=None, check=True):
+    manifest = load_manifest(os.path.join(repo_path, C.MANIFEST_FILE))
     config = OrderedDict((
         ('repo', repo_path),
         ('sha', sha or get_head_sha(repo_path)),

testing/resources/legacy_hooks_yaml_repo/hooks.yaml

@@ -1,5 +0,0 @@
--   id: system-hook-with-spaces
-    name: System hook with spaces
-    entry: bash -c 'echo "Hello World"'
-    language: system
-    files: \.sh$