diff --git a/lib/bundler/installer/gem_installer.rb b/lib/bundler/installer/gem_installer.rb
index 1df86ccfbc..13a1356f56 100644
--- a/lib/bundler/installer/gem_installer.rb
+++ b/lib/bundler/installer/gem_installer.rb
@@ -13,7 +13,7 @@ module Bundler
     end
 
     def install_from_spec
-      post_install_message = spec_settings ? install_with_settings : install
+      post_install_message = install
       Bundler.ui.debug "#{worker}:  #{spec.name} (#{spec.version}) from #{spec.loaded_from}"
       generate_executable_stubs
       return true, post_install_message
@@ -54,11 +54,6 @@ module Bundler
       spec.source.install(spec, :force => force, :ensure_builtin_gems_cached => standalone, :build_args => Array(spec_settings))
     end
 
-    def install_with_settings
-      # Build arguments are global, so this is mutexed
-      Bundler.rubygems.install_with_build_args([spec_settings]) { install }
-    end
-
     def out_of_space_message
       "#{install_error_message}\nYour disk is out of space. Free some space to be able to install your bundle."
     end
diff --git a/lib/bundler/rubygems_integration.rb b/lib/bundler/rubygems_integration.rb
index 8589c14704..ba4317775e 100644
--- a/lib/bundler/rubygems_integration.rb
+++ b/lib/bundler/rubygems_integration.rb
@@ -232,18 +232,6 @@ module Bundler
       EXT_LOCK
     end
 
-    def with_build_args(args)
-      ext_lock.synchronize do
-        old_args = build_args
-        begin
-          self.build_args = args
-          yield
-        ensure
-          self.build_args = old_args
-        end
-      end
-    end
-
     def spec_from_gem(path, policy = nil)
       require "rubygems/security"
       require_relative "psyched_yaml"
@@ -550,10 +538,6 @@ module Bundler
       Gem::REPOSITORY_SUBDIRECTORIES
     end
 
-    def install_with_build_args(args)
-      yield
-    end
-
     def path_separator
       Gem.path_separator
     end