Remove date segment in run command name

Azure Arc remote machines are limited to 25 run commands.
The command we currently issue when deploying has a date in the name and this uniqueness means we hit this threshold regularly.
Run commands with non-unique names overwrite one another. For the purposes of deploying to a machine this is fine as the command contains the clean sha (PR number or version) and the machine name.

Author: steventux

scripts/bash/deploy_arc_ring.sh

@@ -100,8 +100,7 @@ SAMPLE_IMAGES_PATH=${BASE_PATH}/current/sample_images"
 
   # Use machine name + timestamp to ensure uniqueness across parallel submissions.
   CLEAN_TAG=$(echo "${RELEASE_TAG}" | tr '.' '-' | tr '/' '-')
-  DEPLOY_ID=$(date +%s)
-  RUN_CMD_NAME="deploy-mbsgw-${CLEAN_TAG}-${MACHINE}-${DEPLOY_ID}"
+  RUN_CMD_NAME="deploy-mbsgw-${CLEAN_TAG}-${MACHINE}"
 
   CMD_URL="https://management.azure.com/subscriptions/${SUB_ID}/resourceGroups/${ARC_RG}/providers/Microsoft.HybridCompute/machines/${MACHINE}/runCommands/${RUN_CMD_NAME}?api-version=2024-07-10"