Code style formatting and minor tweaks

#2800

Source/Engine/GraphicsDevice/Vulkan/iOS/iOSVulkanPlatform.cpp

@@ -17,6 +17,7 @@ void iOSVulkanPlatform::GetInstanceExtensions(Array<const char*>& extensions, Ar
 void iOSVulkanPlatform::CreateSurface(Window* window, GPUDeviceVulkan* device, VkInstance instance, VkSurfaceKHR* surface)
 {
     void* windowHandle = window->GetNativePtr();
+
 	// Create surface on a main UI Thread
 	Function<void()> func = [&windowHandle, &instance, &surface]()
 	{

Source/Engine/GraphicsDevice/Vulkan/iOS/iOSVulkanPlatform.h

@@ -11,8 +11,6 @@
 // General/Validation Error:0 VK_ERROR_INITIALIZATION_FAILED: Could not create MTLCounterSampleBuffer for query pool of type VK_QUERY_TYPE_TIMESTAMP. Reverting to emulated behavior. (Error code 0): Cannot allocate sample buffer
 #define VULKAN_USE_TIMER_QUERIES 0
 
-class GPUDeviceVulkan;
-
 /// <summary>
 /// The implementation for the Vulkan API support for iOS platform.
 /// </summary>