fix: update requirements.txt (#516)

* fix: remove version update check

because autosynth now directly calls the synthtool code in this repo.

* fix: add 'deprecation' dot requirements.txt

* fix: add `protobuf` to requirements.txt

* lint

Author: SurferJeffAtGoogle

requirements.txt

@@ -5,6 +5,8 @@ nox
 requests
 pyyaml
 jinja2
+deprecation
+protobuf
 
 # some java processing requires xml handling
 lxml

synthtool/__init__.py

@@ -18,7 +18,6 @@
 
 from synthtool.transforms import move, replace
 from synthtool import log
-from synthtool import update_check
 
 copy = move
 
@@ -31,6 +30,3 @@
     log.critical(
         "You are running the synthesis script directly, this will be disabled in a future release of Synthtool. Please use python3 -m synthtool instead."
     )
-
-# check for updates, if needed.
-update_check.check_for_updates("gcp-synthtool", print=log.critical)