remove additional composer update call that was done pre-build for PHP Originally added in #724 as a way of generating a composer-lock.json file server side for users, this change actually pulls all of the deps to do so, voiding the caching benefits of FTL.  This PR undoes the server side file creation done in #724.
remove additional composer update call that was done pre-build for PHP
Originally added in #724 as a way of generating a composer-lock.json file server side for users, this change actually pulls all of the deps to do so, voiding the caching benefits of FTL.  This PR undoes the server side file creation done in #724.

dlorenc/runtimes-common,sharifelgamal/runtimes-common,GoogleCloudPlatform/runtimes-common,sharifelgamal/runtimes-common,sharifelgamal/runtimes-common,sharifelgamal/runtimes-common,GoogleCloudPlatform/runtimes-common,dlorenc/runtimes-common,sharifelgamal/runtimes-common,dlorenc/runtimes-common,GoogleCloudPlatform/runtimes-common,sharifelgamal/runtimes-common,sharifelgamal/runtimes-common