Remove redundant flow control.

Author: comintern

Rubberduck.Parsing/Symbols/Declaration.cs

@@ -639,11 +639,7 @@ public override int GetHashCode()
 
         public void ClearReferences()
         {
-            while (!_references.IsEmpty)
-            {
-                IdentifierReference reference;
-                _references.TryTake(out reference);
-            }
+            _references = new ConcurrentBag<IdentifierReference>();
         }
     }
 }

Rubberduck.Parsing/VBA/RubberduckParserState.cs

@@ -710,12 +710,7 @@ public void ClearBuiltInReferences()
                 {
                     continue;
                 }
-                
-                foreach (var reference in declaration.References)
-                {
-                    declaration.ClearReferences();
-                    break;
-                }
+                declaration.ClearReferences();
             }
         }