Fixup remove unused code

Author: ggilder

localtests/test.sh

@@ -107,12 +107,6 @@ verify_master_and_replica() {
     fi
 }
 
-exec_cmd() {
-    echo "$@"
-    command "$@" 1>$test_logfile 2>&1
-    return $?
-}
-
 echo_dot() {
     echo -n "."
 }