chore(git): Remove another already supported netloc scheme ('git')

See also:
- #378 (removes 'git+ssh')
- python/cpython@ead169d
- https://bugs.python.org/issue8657 or
  python/cpython#52903 (comment)

Author: tony

libvcs/projects/git.py

@@ -157,7 +157,7 @@ def convert_pip_url(pip_url: str) -> VCSLocation:
 
 class GitProject(BaseProject):
     bin_name = "git"
-    schemes = ("git", "git+http", "git+https", "git+file")
+    schemes = ("git+http", "git+https", "git+file")
     _remotes: GitProjectRemoteDict
 
     def __init__(