Remove unused methods in Scopes

Author: aNNiMON

ownlang-core/src/main/java/com/annimon/ownlang/lib/Scope.java

@@ -44,10 +44,6 @@ public final void setVariable(String name, Value value) {
         variables.put(name, value);
     }
 
-    public final void removeVariable(String name) {
-        variables.remove(name);
-    }
-
     public Map<String, Value> getVariables() {
         return variables;
     }

ownlang-core/src/main/java/com/annimon/ownlang/lib/ScopeHandler.java

@@ -129,12 +129,6 @@ public static void defineVariableInCurrentScope(String name, Value value) {
         }
     }
 
-    public static void removeVariable(String name) {
-        synchronized (lock) {
-            findScope(name).scope.removeVariable(name);
-        }
-    }
-
     private static ScopeFindData findScope(String name) {
         Scope current = scope;
         do {