libmakepkg: fix .gitignore to simply ignore all generated .sh files

Prior to commit aca153bfa6 some .sh files
were not generated and simply included directly, and it was necessary to
explicitly iterate all ignored files to prevent git from ignoring the
directly-included files. However, now all .sh files are in fact
generated so it makes no sense to list each one separately in the
.gitignore file.

Signed-off-by: Eli Schwartz <eschwartz@archlinux.org>
Signed-off-by: Allan McRae <allan@archlinux.org>

scripts/libmakepkg/.gitignore

@@ -1,17 +1 @@
-integrity.sh
-integrity/*.sh
-lint_package.sh
-lint_package/*.sh
-lint_pkgbuild.sh
-lint_pkgbuild/*.sh
-source.sh
-source/*.sh
-srcinfo.sh
-tidy.sh
-tidy/*.sh
-util.sh
-util/message.sh
-util/option.sh
-util/parseopts.sh
-util/pkgbuild.sh
-util/source.sh
+*.sh