ProjectExplorer: Remove *Configuration::availableCreationIdsChanged

Unused and apparently unneeded.

Change-Id: I58fab4e426b7daeac5a68887b5eacfeeb17013d3
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/projectexplorer/buildconfiguration.h

@@ -169,9 +169,6 @@ protected:
         m_buildConfigId = buildConfigId;
     }
 
-signals:
-    void availableCreationIdsChanged();
-
 private:
     BuildConfigurationCreator m_creator;
     Core::Id m_buildConfigId;

src/plugins/projectexplorer/deployconfiguration.h

@@ -122,9 +122,6 @@ protected:
         m_deployConfigBaseId = deployConfigBaseId;
     }
 
-signals:
-    void availableCreationIdsChanged();
-
 private:
     DeployConfigurationCreator m_creator;
     Core::Id m_deployConfigBaseId;

src/plugins/projectexplorer/runconfiguration.h

@@ -317,9 +317,6 @@ public:
     static IRunConfigurationFactory *find(Target *parent, RunConfiguration *rc);
     static QList<IRunConfigurationFactory *> find(Target *parent);
 
-signals:
-    void availableCreationIdsChanged();
-
 protected:
     virtual QList<BuildTargetInfo> availableBuildTargets(Target *parent, CreationMode mode = UserCreate) const;
 

src/plugins/qmakeprojectmanager/qmakebuildconfiguration.cpp

@@ -551,9 +551,6 @@ QmakeBuildConfigurationFactory::QmakeBuildConfigurationFactory()
     registerBuildConfiguration<QmakeBuildConfiguration>(Constants::QMAKE_BC_ID);
     setSupportedProjectType(Constants::QMAKEPROJECT_ID);
     setSupportedProjectMimeTypeName(Constants::PROFILE_MIMETYPE);
-
-    connect(QtVersionManager::instance(), &QtVersionManager::qtVersionsChanged,
-            this, &IBuildConfigurationFactory::availableCreationIdsChanged);
 }
 
 QmakeBuildInfo *QmakeBuildConfigurationFactory::createBuildInfo(const Kit *k,