.gitignore: Stop ignoring 000*.patch

We have tracked patches named 000*.patch, and we want to keep those, so
this .gitignore line is incorrect. Additionally, this line makes packit
source-git update-dist-git fail.

Signed-off-by: Clemens Lang <cllang@redhat.com>

.gitignore

@@ -1,6 +1,5 @@
 .build*.log
 clog
-000*.patch
 *.src.rpm
 openssl-1.0.0a-usa.tar.bz2
 /openssl-1.0.0b-usa.tar.bz2