revert change to set LOG4J_FORMAT_MSG_NO_LOOKUPS in base images
revert change to set LOG4J_FORMAT_MSG_NO_LOOKUPS in base images

This env var does not fully mitigate the issue and still requires user action to apply so it is better to point developers to documentation on how to properly fix this.

PiperOrigin-RevId: 416452724
Change-Id: I61daef57f04e59e93ce1ed20a03453cdc16f2cda

GoogleCloudPlatform/buildpacks,GoogleCloudPlatform/buildpacks,GoogleCloudPlatform/buildpacks,GoogleCloudPlatform/buildpacks