Revert "Add "option javanano_use_deprecated_package = true;\n" to protos compiled with the nano proto compiler that are referenced in Java files."

This reverts commit 469fea0b390e893c1eb8115ff6c5f997916be4c1.

Change-Id: I2977f49a9836fd08038028c6cd8d3eed73185dde
diff --git a/protos/backup.proto b/protos/backup.proto
index 42873b5..44c4b09 100644
--- a/protos/backup.proto
+++ b/protos/backup.proto
@@ -18,7 +18,6 @@
 
 package launcher_backup;
 
-option javanano_use_deprecated_package = true;
 option java_package = "com.android.launcher3.backup";
 option java_outer_classname = "BackupProtos";