[Sema] Remove unused variable

Author: hamishknight

lib/Sema/PreCheckExpr.cpp

@@ -465,7 +465,6 @@ Expr *TypeChecker::resolveDeclRefExpr(UnresolvedDeclRefExpr *UDRE,
 
   // First, look for a local binding in scope.
   if (Loc.isValid() && !Name.isOperator()) {
-    SmallVector<ValueDecl *, 2> localDecls;
     ASTScope::lookupLocalDecls(DC->getParentSourceFile(),
                                LookupName.getFullName(), Loc,
                                /*stopAfterInnermostBraceStmt=*/false,