Removed circular require

Import rubygems/rubygems#2679

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67206 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

lib/rubygems/text.rb

@@ -1,5 +1,4 @@
 # frozen_string_literal: true
-require 'rubygems'
 
 ##
 # A collection of text-wrangling methods