Remove conditional

Library/Homebrew/compilers.rb

@@ -108,11 +108,11 @@ class CompilerSelector
       when :gnu
         GNU_GCC_VERSIONS.reverse_each do |v|
           name = "gcc-#{v}"
-          version = compiler_version(name)
+          version = versions.non_apple_gcc_version(name)
           yield Compiler.new(name, version) if version
         end
       else
-        version = compiler_version(compiler)
+        version = versions.send("#{compiler}_build_version")
         yield Compiler.new(compiler, version) if version
       end
     end
@@ -121,13 +121,4 @@ class CompilerSelector
   def fails_with?(compiler)
     failures.any? { |failure| failure === compiler }
   end
-
-  def compiler_version(name)
-    case name
-    when GNU_GCC_REGEXP
-      versions.non_apple_gcc_version(name)
-    else
-      versions.send("#{name}_build_version")
-    end
-  end
 end