Remove Phabricator-specific handling in pre-push.py, also don't print commits beyond 10

If you push a new branch, it would tend to explode printing all the commits.

Author: joker-eph

llvm/utils/git/pre-push.py

@@ -176,28 +176,15 @@ def handle_push(args, local_ref, local_sha, remote_ref, remote_sha):
 
     # Print the revision about to be pushed commits
     print('Pushing to "%s" on remote "%s"' % (remote_ref, args.url))
-    for sha in revs:
+    for sha in revs[:10]:
         print(" - " + git("show", "--oneline", "--quiet", sha))
+    if len(revs) > 10:
+        print("and %d more!" % (len(revs) - 5))
 
     if len(revs) > 1:
         if not ask_confirm("Are you sure you want to push %d commits?" % len(revs)):
             die("Aborting")
 
-    for sha in revs:
-        msg = git("log", "--format=%B", "-n1", sha)
-        if "Differential Revision" not in msg:
-            continue
-        for line in msg.splitlines():
-            for tag in ["Summary", "Reviewers", "Subscribers", "Tags"]:
-                if line.startswith(tag + ":"):
-                    eprint(
-                        'Please remove arcanist tags from the commit message (found "%s" tag in %s)'
-                        % (tag, sha[:12])
-                    )
-                    if len(revs) == 1:
-                        eprint("Try running: llvm/utils/git/arcfilter.sh")
-                    die('Aborting (force push by adding "--no-verify")')
-
     return