views: Remove unused parameter

Not only it was unused but also used for something else than the name
has indicated.
Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>

patchwork/views/patch.py

@@ -126,7 +126,7 @@ def list(request, project_id):
     return render(request, 'patchwork/list.html', context)
 
 
-def _get_patch_or_404(request, msgid):
+def _get_patch_or_404(msgid):
     patch = Patch.objects.filter(msgid='<' + msgid + '>').first()
     if patch is None:
         raise Http404("Patch not found")
@@ -134,5 +134,5 @@ def _get_patch_or_404(request, msgid):
 
 
 def msgid(request, msgid):
-    patch = _get_patch_or_404(Patch, msgid)
+    patch = _get_patch_or_404(msgid)
     return redirect(patch)