Removing repository field from protos.

This value was added for a change that is has been obsoleted. Removing
it completely, and freeing up the index in the proto rather than reserving
it since it was added yesterday and had never been used.

Bug:https://github.com/flutter/flutter/issues/115489
Change-Id: Id365b75d94df77c7d2ba7925fec8521dfd62e1d5
Reviewed-on: https://flutter-review.googlesource.com/c/recipes/+/36802
Commit-Queue: Yusuf Mohsinally <mohsinally@google.com>
Commit-Queue: Godofredo Contreras <godofredoc@google.com>
Reviewed-by: Godofredo Contreras <godofredoc@google.com>
diff --git a/recipes/engine/engine.proto b/recipes/engine/engine.proto
index 35b2951..b6f7ab0 100644
--- a/recipes/engine/engine.proto
+++ b/recipes/engine/engine.proto
@@ -69,8 +69,6 @@
   // emulator architecture to run tests on
   // Currently only used by femu_test
   string emulator_arch = 32;
-
-  string repository = 33;
 }
 
 message EnvProperties {
diff --git a/recipes/release/release.proto b/recipes/release/release.proto
index e28269f..9c091f4 100644
--- a/recipes/release/release.proto
+++ b/recipes/release/release.proto
@@ -69,9 +69,6 @@
   // emulator architecture to run tests on
   // Currently only used by femu_test
   string emulator_arch = 32;
-
-  // github repository name variable
-  string repository = 33;
 }
 
 message EnvProperties {