[rubygems/rubygems] Cleanup old legacy code

https://github.com/rubygems/rubygems/commit/531d6b5fee

lib/bundler/rubygems_integration.rb

@@ -283,11 +283,7 @@ module Bundler
 
           e = Gem::LoadError.new(message)
           e.name = dep.name
-          if e.respond_to?(:requirement=)
-            e.requirement = dep.requirement
-          elsif e.respond_to?(:version_requirement=)
-            e.version_requirement = dep.requirement
-          end
+          e.requirement = dep.requirement
           raise e
         end
 

lib/bundler/runtime.rb

@@ -301,11 +301,7 @@ module Bundler
       e = Gem::LoadError.new "You have already activated #{activated_spec.name} #{activated_spec.version}, " \
                              "but your Gemfile requires #{spec.name} #{spec.version}. #{suggestion}"
       e.name = spec.name
-      if e.respond_to?(:requirement=)
-        e.requirement = Gem::Requirement.new(spec.version.to_s)
-      else
-        e.version_requirement = Gem::Requirement.new(spec.version.to_s)
-      end
+      e.requirement = Gem::Requirement.new(spec.version.to_s)
       raise e
     end
   end

spec/bundler/runtime/setup_spec.rb

@@ -341,19 +341,6 @@ RSpec.describe "Bundler.setup" do
         expect(out).to eq("WIN")
       end
 
-      it "version_requirement is now deprecated in rubygems 1.4.0+ when gem is missing" do
-        run <<-R
-          begin
-            gem "activesupport"
-            puts "FAIL"
-          rescue LoadError
-            puts "WIN"
-          end
-        R
-
-        expect(err).to be_empty
-      end
-
       it "replaces #gem but raises when the version is wrong" do
         run <<-R
           begin
@@ -366,19 +353,6 @@ RSpec.describe "Bundler.setup" do
 
         expect(out).to eq("WIN")
       end
-
-      it "version_requirement is now deprecated in rubygems 1.4.0+ when the version is wrong" do
-        run <<-R
-          begin
-            gem "rack", "1.0.0"
-            puts "FAIL"
-          rescue LoadError
-            puts "WIN"
-          end
-        R
-
-        expect(err).to be_empty
-      end
     end
 
     describe "by hiding system gems" do