Remove google-protobuf workaround for musl

Author: ntkme

Gemfile

@@ -5,9 +5,6 @@ source 'https://rubygems.org'
 gemspec
 
 group :development do
-  # TODO: https://github.com/protocolbuffers/protobuf/issues/16853
-  gem 'google-protobuf', force_ruby_platform: true if RUBY_PLATFORM.include?('linux-musl')
-
   gem 'rake', '>= 13'
   gem 'rspec', '~> 3.13.0'
   gem 'rubocop', '~> 1.75.0'