useless inheritance deleted

viuginick1 · viuginick1 · commit 80b1e8b7f31b · 2017-08-31T19:54:35.000+03:00
diff --git a/lib/ruby-debug-ide/xml_printer.rb b/lib/ruby-debug-ide/xml_printer.rb
@@ -13,7 +13,7 @@ module OverflowMessageType
     SPECIAL_SYMBOL_MESSAGE = lambda {|e| '<?>'}
   end
 
-  class ExecError < StandardError
+  class ExecError
     attr_reader :message
     attr_reader :backtrace
 
