rubocop: fix offences of the Style/UnneededPercentQ cop

.rubocop_todo.yml

@@ -314,12 +314,6 @@ Style/PerlBackrefs:
     - 'lib/pry/method.rb'
     - 'lib/pry/rubygem.rb'
 
-# Offense count: 1
-# Cop supports --auto-correct.
-Style/UnneededPercentQ:
-  Exclude:
-    - 'spec/syntax_checking_spec.rb'
-
 # Offense count: 17
 # Cop supports --auto-correct.
 Style/VariableInterpolation:

spec/syntax_checking_spec.rb

@@ -40,7 +40,7 @@ describe Pry do
   end
 
   it "should not intefere with syntax errors explicitly raised" do
-    redirect_pry_io(InputTester.new(%q(raise SyntaxError, "unexpected $end")), @str_output) do
+    redirect_pry_io(InputTester.new('raise SyntaxError, "unexpected $end"'), @str_output) do
       Pry.start
     end