[rubygems/rubygems] Cleanup now unnecessary RUBYOPT handling

ruby/rubygems@ac83c78635

Author: deivid-rodriguez

spec/bundler/install/gems/compact_index_spec.rb

@@ -742,7 +742,7 @@ def require(*args)
         gem "myrack"
       G
 
-      bundle :install, env: { "RUBYOPT" => opt_add("-I#{bundled_app("broken_ssl")}", ENV["RUBYOPT"]) }, raise_on_error: false, artifice: nil
+      bundle :install, env: { "RUBYOPT" => "-I#{bundled_app("broken_ssl")}" }, raise_on_error: false, artifice: nil
       expect(err).to include("recompile Ruby").and include("cannot load such file")
     end
   end

spec/bundler/install/gems/dependency_api_spec.rb

@@ -712,7 +712,7 @@ def require(*args)
         gem "myrack"
       G
 
-      bundle :install, artifice: "fail", env: { "RUBYOPT" => opt_add("-I#{bundled_app("broken_ssl")}", ENV["RUBYOPT"]) }, raise_on_error: false
+      bundle :install, artifice: "fail", env: { "RUBYOPT" => "-I#{bundled_app("broken_ssl")}" }, raise_on_error: false
       expect(err).to include("recompile Ruby").and include("cannot load such file")
     end
   end

spec/bundler/runtime/requiring_spec.rb

@@ -2,13 +2,13 @@
 
 RSpec.describe "Requiring bundler" do
   it "takes care of requiring rubygems when entrypoint is bundler/setup" do
-    sys_exec("#{Gem.ruby} -I#{lib_dir} -rbundler/setup -e'puts true'", env: { "RUBYOPT" => opt_add("--disable=gems", ENV["RUBYOPT"]) })
+    sys_exec("#{Gem.ruby} -I#{lib_dir} -rbundler/setup -e'puts true'", env: { "RUBYOPT" => "--disable=gems" })
 
     expect(stdboth).to eq("true")
   end
 
   it "takes care of requiring rubygems when requiring just bundler" do
-    sys_exec("#{Gem.ruby} -I#{lib_dir} -rbundler -e'puts true'", env: { "RUBYOPT" => opt_add("--disable=gems", ENV["RUBYOPT"]) })
+    sys_exec("#{Gem.ruby} -I#{lib_dir} -rbundler -e'puts true'", env: { "RUBYOPT" => "--disable=gems" })
 
     expect(stdboth).to eq("true")
   end