update generate-release-notes

the helper has been updated to handle whitespace itself

Author: ameowlia

scripts/generate-release-notes.bash

@@ -19,5 +19,4 @@ local_end_ref=$(get_end_ref_from_range "${version_range}")
 GO_MOD_LOCATION="src/code.cloudfoundry.org/go.mod";
 
 get_non_bot_commits "${local_start_ref}" "${local_end_ref}"
-echo ""
 display_go_mod_diff "${local_start_ref}" "${local_end_ref}" "${GO_MOD_LOCATION}"