workingctx: eliminate remove function
Inlining it into it's last remaining call place in cmdutil.copy.
Note that cmdutil.copy is called with the wlock already held, so no additional
locking is needed to call util.unlinkpath.
We do not need to wrap the util.unlinkpath call into a try block, because
at that point we already know whether abssrc exists or not -- thanks to the
preceding util.copyfile call. Adding a new local 'srcexists' in cmdutil.copy
for that purpose.
$ "$TESTDIR/hghave" pyflakes || exit 80
$ cd $(dirname $TESTDIR)
$ pyflakes mercurial hgext 2>&1 | $TESTDIR/filterpyflakes.py
mercurial/hgweb/server.py:*: 'activeCount' imported but unused (glob)
mercurial/commands.py:*: 'base85' imported but unused (glob)
mercurial/commands.py:*: 'bdiff' imported but unused (glob)
mercurial/commands.py:*: 'mpatch' imported but unused (glob)
mercurial/commands.py:*: 'osutil' imported but unused (glob)
hgext/inotify/linux/__init__.py:*: 'from _inotify import *' used; unable to detect undefined names (glob)
mercurial/util.py:*: 'from posix import *' used; unable to detect undefined names (glob)
mercurial/windows.py:*: 'from win32 import *' used; unable to detect undefined names (glob)
mercurial/util.py:*: 'from windows import *' used; unable to detect undefined names (glob)