Skip RBE warning message

Since RBE is default for dev builds, and we no longer set RBE config
through env variables, this error message is incorrect.

Bug: b/265326161
Test: Ran a build and make sure this error message wasn't printed
anymore.

Change-Id: I128616ce37763400407e099b52ef284905239eb4
diff --git a/envsetup.sh b/envsetup.sh
index a30f6bd..6fe1f66 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -1852,11 +1852,6 @@
         color_reset=""
     fi
 
-    if [[ "x${USE_RBE}" == "x" && $mins -gt 15 && "${ANDROID_BUILD_ENVIRONMENT_CONFIG}" == "googler" ]]; then
-        echo
-        echo "${color_warning}Start using RBE (http://go/build-fast) to get faster builds!${color_reset}"
-    fi
-
     echo
     if [ $ret -eq 0 ] ; then
         echo -n "${color_success}#### build completed successfully "