Revert "Add banner announcing adevice when running builds."

This reverts commit 6d10bbddf9.

Reason for revert: broke exit code from `m`

Bug: 309792999
Change-Id: If0de43003a9c4427d1da941de4afc28723ee0cd3

envsetup.sh

@@ -1878,10 +1878,6 @@ function _trigger_build()
       >&2 echo "Couldn't locate the top of the tree. Try setting TOP."
       return 1
     fi
-
-    if [[ -z "${ANDROID_QUIET_BUILD:-}" && -n "${ANDROID_BUILD_BANNER}" ]]; then
-      echo "$ANDROID_BUILD_BANNER"
-    fi
 )
 
 function m()