remove unused matcher

Author: joelhawksley

lib/rubocop/cop/github/render_literal_helpers.rb

@@ -20,10 +20,6 @@ module RenderLiteralHelpers
           (send nil? {:render :render_to_string} ({str sym} $_) $...)
         PATTERN
 
-        def_node_matcher :render_inst?, <<-PATTERN
-          (send nil? {:render :render_to_string} (send _ :new ...) ...)
-        PATTERN
-
         def_node_matcher :render_with_options?, <<-PATTERN
           (send nil? {:render :render_to_string} (hash $...) ...)
         PATTERN