Clean up comments in .env file

Remove redundant comments about version auto-generation.

Author: andrewjong

.env

@@ -11,8 +11,6 @@
 PROJECT_NAME="airstack"
 # If you've run ./airstack.sh setup, then this will auto-generate from the git commit hash every time a change is made 
 # to a Dockerfile or docker-compose.yaml file. Otherwise this can also be set explicitly to make a release version.
-# auto-generated from git commit hash. `airstack version` will output this tag.
-# auto-generated from git commit hash
 VERSION="0.18.0-alpha.2"
 # Choose "dev" or "prebuilt". "dev" is for mounted code that must be built live. "prebuilt" is for built ros_ws baked into the image
 DOCKER_IMAGE_BUILD_MODE="dev"  
@@ -50,4 +48,4 @@ URDF_FILE="robot_descriptions/iris/urdf/iris_with_sensors.pegasus.robot.urdf"
 
 # offboard API streaming out. this is so that ports don't conflict for multi-agent FCU communication. 
 OFFBOARD_BASE_PORT=14540
-ONBOARD_BASE_PORT=14580
+ONBOARD_BASE_PORT=14580