Tiny fix for .gitignore
Tiny fix for .gitignore

The expression `**.xxx` doesn't make sense because '**' makes sense only for
directories.  Since `*.xxx` is relative it already applies for all files in all
directories with the specified extension.

Little background: git actually ignores that, but ripgrep throws a warning about
it so when looking for something I always get 4 lines of warnings.  Even though
they are harmless, they are pretty annoying.

Signed-off-by: Martin Kletzander <e82f23e74d43760279ebcc505dac4ae70d5627d0@redhat.com>

stu-gott/kubevirt,rmohr/kubevirt,davidvossel/kubevirt,davidvossel/kubevirt,davidvossel/kubevirt,kubevirt/kubevirt,rmohr/kubevirt,kubevirt/kubevirt,davidvossel/kubevirt,kubevirt/kubevirt,stu-gott/kubevirt,stu-gott/kubevirt,stu-gott/kubevirt,kubevirt/kubevirt