Referred names in namespace should not be accessible through the namespace

# EXPECTED
```
user=> (require 'clojure.string)
nil
user=> clojure.string/+
Syntax error compiling at (REPL:0:0).
No such var: clojure.string/+
user=> 
```

# ACTUAL
```
user=> (require 'glojure.string)
nil
user=> glojure.string/+
#object[ 0xf3374ba "#object[*runtime.Fn]"]
user=>  
```