Move gitignore entry

Signed-off-by: Daniel M. Capella <polyzen@archlinux.org>

.gitignore

@@ -10,5 +10,4 @@ configure
 depcomp
 install-sh
 missing
-src/pacman-filesdb-refresh.service
 test-driver

src/.gitignore

@@ -5,6 +5,7 @@ paccache.service
 pacdiff
 paclist
 paclog-pkglist
+pacman-filesdb-refresh.service
 pacscripts
 pacsearch
 pacsort