YJIT: Remove unused variables

yjit.rb

@@ -401,7 +401,6 @@ def print_sorted_method_calls(calls, num_calls, out:, type:, how_many: 20, left_
 
       top_n_total = pairs.sum { |name, count| count }
       top_n_pct = 100.0 * top_n_total / num_calls
-      longest_name_len = pairs.max_by { |name, count| name.length }.first.length
 
       out.puts "Top-#{pairs.size} most frequent #{type} calls (#{"%.1f" % top_n_pct}% of #{type} calls):"
 
@@ -429,7 +428,6 @@ def print_sorted_exit_counts(stats, out:, prefix:, how_many: 20, left_pad: 4) #
 
         out.puts "Top-#{exits.size} most frequent exit ops (#{"%.1f" % top_n_exit_pct}% of exits):"
 
-        longest_insn_name_len = exits.max_by { |name, count| name.length }.first.length
         exits.each do |name, count|
           padded_count = format_number_pct(10, count, total_exits)
           out.puts("#{padded_count}: #{name}")