Utils: fix emitting FancyLineEdit::validChanged after delayed validation

Change-Id: I0688f21020517ccf45011f8e0b1a5aeb8b1b4f2c
Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>

src/libs/utils/fancylineedit.cpp

@@ -579,7 +579,6 @@ void FancyLineEdit::validate()
                     handleValidationResult(result, oldText);
                 });
 
-        d->m_state = Validating;
         d->m_spinnerDelayTimer.start();
 
         AsyncValidationFuture future = validationFunction(text());

src/libs/utils/fancylineedit.h

@@ -106,7 +106,7 @@ public:
     using SynchronousValidationFunction = std::function<bool(FancyLineEdit *, QString *)>;
     using ValidationFunction = std::variant<AsyncValidationFunction, SynchronousValidationFunction>;
 
-    enum State { Invalid, DisplayingPlaceholderText, Valid, Validating };
+    enum State { Invalid, DisplayingPlaceholderText, Valid };
 
     State state() const;
     bool isValid() const;

src/libs/utils/projectintropage.cpp

@@ -212,8 +212,6 @@ bool ProjectIntroPage::validate()
         return false;
     case FancyLineEdit::Valid:
         break;
-    case FancyLineEdit::Validating:
-        break;
     }
 
     // Check existence of the directory