build_environment: delete BuildEnvironment#userpaths?

Library/Homebrew/build_environment.rb

@@ -29,11 +29,6 @@ class BuildEnvironment
     @settings.include? :std
   end
 
-  sig { returns(T::Boolean) }
-  def userpaths?
-    @settings.include? :userpaths
-  end
-
   # DSL for specifying build environment settings.
   module DSL
     extend T::Sig

Library/Homebrew/test/build_environment_spec.rb

@@ -4,8 +4,6 @@
 require "build_environment"
 
 describe BuildEnvironment do
-  alias_matcher :use_userpaths, :be_userpaths
-
   let(:env) { described_class.new }
 
   describe "#<<" do
@@ -31,39 +29,17 @@ describe BuildEnvironment do
     end
   end
 
-  describe "#userpaths?" do
-    it "returns true if the environment contains :userpaths" do
-      env << :userpaths
-      expect(env).to use_userpaths
-    end
-
-    it "returns false if the environment does not contain :userpaths" do
-      expect(env).not_to use_userpaths
-    end
-  end
-
   describe BuildEnvironment::DSL do
     subject(:build_environment_dsl) { double.extend(described_class) }
 
     context "with a single argument" do
       before do
         build_environment_dsl.instance_eval do
-          env :userpaths
-        end
-      end
-
-      its(:env) { is_expected.to use_userpaths }
-    end
-
-    context "with multiple arguments" do
-      before do
-        build_environment_dsl.instance_eval do
-          env :userpaths, :std
+          env :std
         end
       end
 
       its(:env) { is_expected.to be_std }
-      its(:env) { is_expected.to use_userpaths }
     end
   end
 end