Revert of include Package proto into Result proto

recipe_engine/result.proto

 syntax = "proto3";
 
 package recipe_engine;
 
-import "package.proto";
-
 // The result of a recipe execution.
 message Result {
   oneof oneof_result {
     // The json result of a recipe. Guaranteed to be a JSON 'object' (e.g.
     // "{...}") or omitted.
     string json_result = 1;
 
     // The cause of the failure of a recipe.
     Failure failure = 2;
   }
-
-  // Initial recipe repo's package spec (recipes.cfg).
-  Package recipe_package = 3;
 }
 
 message Failure {
   // A reason readable by humans. Printed to the UI, and will be seen by users.
   string human_reason = 1;
 
   // The cause of this failure.
   oneof failure_type {
     // Step timed out.
     Timeout timeout = 2;
@@ skipping 30 matching lines @@
   string step = 1;
 }
 
 // A step failed to execute "correctly". Correct generally is indicated by a
 // return code of 0, but the step can allow for other return codes as well.
 message StepFailure {
   // The step which failed.
   string step = 1;
 }