Drop useless %{rubygems_default_filter}.

Shortly after introduction of this macro, the F20 was adjusted to ignore
.so files provided by gems. The rhbz#1020810 was requesting to adjust the
macro, but it will be better to drop it entirely, because no other usage
for this macro was discovered in past 5 years.

macros.rubygems

@@ -32,16 +32,6 @@ gem install \\\
 %{nil}
 
 
-# For rubygems packages we want to filter out any provides caused by private
-# libs in %%{gem_archdir}.
-#
-# Note that this must be invoked in the spec file, preferably as
-# "%{?rubygems_default_filter}", before any %description block.
-%rubygems_default_filter %{expand: \
-%global __provides_exclude_from %{?__provides_exclude_from:%{__provides_exclude_from}|}^%{gem_extdir_mri}/.*\\\\.so$ \
-}
-
-
 # The 'read' command in %%gemspec_* macros is not essential, but it is usefull
 # to make the sript appear in build log.
 

ruby.spec

@@ -1212,6 +1212,7 @@ make check TESTS="-v $DISABLE_TESTS" MSPECOPT="-fs $MSPECOPTS"
 %changelog
 * Mon Jul 01 2019 Vít Ondruch <vondruch@redhat.com> - 2.7.0-1
 - Upgrade to Ruby 2.7.0 (0c6c937904).
+- Drop useless %%{rubygems_default_filter}.
 
 * Tue Jun 25 2019 Vít Ondruch <vondruch@redhat.com> - 2.6.3-121
 - Properly support %%prerelease in %%gemspec_ macros.