more merge artifacts fixes

Author: retailcoder

RubberduckTests/Symbols/DeclarationFinderTests.cs

@@ -1,6 +1,9 @@
-using System.Linq;
+using System.Collections.Generic;
+using System.Linq;
 using System.Threading;
+using Antlr4.Runtime;
 using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Rubberduck.Parsing.Grammar;
 using Rubberduck.Parsing.Symbols;
 using Rubberduck.Parsing.VBA;
 using Rubberduck.VBEditor;