Removed trailing whitespace for linter.

Author: DanielRosenwasser

src/compiler/checker.ts

@@ -7046,7 +7046,7 @@ namespace ts {
                     return type;
                 }
                 const signature = getResolvedSignature(callExpression);
-                
+
                 const predicate = signature.typePredicate;
                 if (!predicate) {
                     return type;