bitbake: git: do not execute 'git remote prune'

'git remote prune' at this location does not make much sense because
the following 'git remote rm' will prune stale and non-stale branches.

The 'prune' can cause trouble because it will access the network
bypassing the no-network code in bitbake. When this operation fails and
throws an exception, the next command (--> 'git remote rm') will be
skipped.  This in turn, will make all the following operations fail,
because they assume that the remote does not exist yet.

(Bitbake rev: 2ba23df5fad4b94d38a6aed97f7822226d72eb89)

Signed-off-by: Enrico Scholz <enrico.scholz@sigma-chemnitz.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/fetch2/git.py

@@ -204,7 +204,6 @@ class Git(FetchMethod):
                 needupdate = True
         if needupdate:
             try: 
-                runfetchcmd("%s remote prune origin" % ud.basecmd, d) 
                 runfetchcmd("%s remote rm origin" % ud.basecmd, d) 
             except bb.fetch2.FetchError:
                 logger.debug(1, "No Origin")