dev-cmd/bottle: clean up intermediate tar

Otherwise Cellar gets cluttered.

Fixes https://github.com/Homebrew/brew/issues/12744.

Library/Homebrew/dev-cmd/bottle.rb

@@ -446,6 +446,7 @@ module Homebrew
             gz.write(tarfile.read(GZIP_BUFFER_SIZE)) until tarfile.eof?
           end
           gz.close
+          rm_f relocatable_tar_path
           sudo_purge
         end
 

Library/Homebrew/test/dev-cmd/bottle_spec.rb

@@ -21,6 +21,7 @@ describe "brew bottle" do
         .to output(/testball--0\.1.*\.bottle\.tar\.gz/).to_stdout
         .and not_to_output.to_stderr
         .and be_a_success
+      expect(HOMEBREW_CELLAR/"testball-bottle.tar").not_to exist
     ensure
       FileUtils.rm_f Dir.glob("testball--0.1*.bottle.tar.gz")
     end