wireprotov2server: let repo.narrowmatch(match) do matcher intersection

This is supported since 4fd0fac48922 (localrepo: allow narrowmatch()
to accept matcher to intersect with, 2018-09-28).

Differential Revision: https://phab.mercurial-scm.org/D5281

mercurial/wireprotov2server.py

@@ -1045,7 +1045,7 b' def makefilematcher(repo, pathfilter):'
 
     # Requested patterns could include files not in the local store. So
     # filter those out.
-    return matchmod.intersectmatchers(repo.narrowmatch(), matcher)
+    return repo.narrowmatch(matcher)
 
 @wireprotocommand(
     'filedata',