Merge pull request #9708 from nvasilevski/rubydex/rubygems-dead-code

Remove dead Cargo target helpers

Author: hsbt

lib/rubygems/ext/cargo_builder.rb

@@ -269,10 +269,6 @@ def ldflag_to_link_modifier(arg)
     LinkFlagConverter.convert(arg)
   end
 
-  def msvc_target?
-    makefile_config("target_os").include?("msvc")
-  end
-
   def darwin_target?
     makefile_config("target_os").include?("darwin")
   end
@@ -281,11 +277,6 @@ def mingw_target?
     makefile_config("target_os").include?("mingw")
   end
 
-  def win_target?
-    target_platform = RbConfig::CONFIG["target_os"]
-    !!Gem::WIN_PATTERNS.find {|r| target_platform =~ r }
-  end
-
   # Interpolate substitution vars in the arg (i.e. $(DEFFILE))
   def maybe_resolve_ldflag_variable(input_arg, dest_dir, crate_name)
     var_matches = input_arg.match(/\$\((\w+)\)/)