[FIXUP] Update README tool definition examples test

Author: sambostock

test/fixtures/files/code_snippet_wrappers/readme/tool_class_definition.rb

@@ -8,13 +8,6 @@
 eval(File.read("code_snippet.rb"), b) # rubocop:disable Security/Eval -- We need to run the snippet in this context to extract the tool
 tool = b.local_variable_get(:tool)
 
-MCP.configure do |config|
-  config.exception_reporter = ->(exception, server_context) do
-    $stderr.puts "Exception: #{exception.inspect}"
-    $stderr.puts "Exception cause: #{exception.cause.inspect}"
-  end
-end
-
 puts MCP::Server.new(tools: [tool]).handle_json(
   {
     jsonrpc: "2.0",