Revert "Implementation of manifest defined githooks"

This reverts commit 38e4387f8eb8cffd6359d726c38a7c524fef07e3.

A "repo init" followed by "repo sync" is meant to be as safe as
"git clone".  In particular it should not run arbitrary code provided
by the manifest owner.

It would still be nice to have support for manifest-defined git hooks
--- they'd just need a prompt like the upload RepoHook has.  Hopefully
a later change can bring them back.

Change-Id: I5ecd90fb5c2ed64f103d856d1ffcba38a47b062d
Signed-off-by: Jonathan Nieder <jrn@google.com>
diff --git a/manifest_xml.py b/manifest_xml.py
index 9472a08..890c954 100644
--- a/manifest_xml.py
+++ b/manifest_xml.py
@@ -64,9 +64,7 @@
                fetch=None,
                manifestUrl=None,
                review=None,
-               revision=None,
-               projecthookName=None,
-               projecthookRevision=None):
+               revision=None):
     self.name = name
     self.fetchUrl = fetch
     self.manifestUrl = manifestUrl
@@ -74,8 +72,6 @@
     self.reviewUrl = review
     self.revision = revision
     self.resolvedFetchUrl = self._resolveFetchUrl()
-    self.projecthookName = projecthookName
-    self.projecthookRevision = projecthookRevision
 
   def __eq__(self, other):
     return self.__dict__ == other.__dict__
@@ -171,11 +167,6 @@
       e.setAttribute('review', r.reviewUrl)
     if r.revision is not None:
       e.setAttribute('revision', r.revision)
-    if r.projecthookName is not None:
-      ph = doc.createElement('projecthook')
-      ph.setAttribute('name', r.projecthookName)
-      ph.setAttribute('revision', r.projecthookRevision)
-      e.appendChild(ph)
 
   def _ParseGroups(self, groups):
     return [x for x in re.split(r'[,\s]+', groups) if x]
@@ -638,13 +629,7 @@
     if revision == '':
       revision = None
     manifestUrl = self.manifestProject.config.GetString('remote.origin.url')
-    projecthookName = None
-    projecthookRevision = None
-    for n in node.childNodes:
-      if n.nodeName == 'projecthook':
-        projecthookName, projecthookRevision = self._ParseProjectHooks(n)
-        break
-    return _XmlRemote(name, alias, fetch, manifestUrl, review, revision, projecthookName, projecthookRevision)
+    return _XmlRemote(name, alias, fetch, manifestUrl, review, revision)
 
   def _ParseDefault(self, node):
     """
@@ -948,8 +933,3 @@
       diff['added'].append(toProjects[proj])
 
     return diff
-
-  def _ParseProjectHooks(self, node):
-    name = self._reqatt(node, 'name')
-    revision = self._reqatt(node, 'revision')
-    return name, revision