vulkan.h: V116 -- Remove VK_IMAGE_LAYOUT_CLEAR_OPTIMAL

Usage was declared redundant.
diff --git a/include/vulkan.h b/include/vulkan.h
index 2ed6096..f5b52d5 100644
--- a/include/vulkan.h
+++ b/include/vulkan.h
@@ -33,7 +33,7 @@
 #include "vk_platform.h"
 
 // Vulkan API version supported by this file
-#define VK_API_VERSION VK_MAKE_VERSION(0, 115, 0)
+#define VK_API_VERSION VK_MAKE_VERSION(0, 116, 0)
 
 #ifdef __cplusplus
 extern "C"
@@ -145,9 +145,8 @@
     VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL        = 0x00000003,   // Optimal layout when image is only used for depth/stencil attachment read/write
     VK_IMAGE_LAYOUT_DEPTH_STENCIL_READ_ONLY_OPTIMAL         = 0x00000004,   // Optimal layout when image is used for read only depth/stencil attachment and shader access
     VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL                = 0x00000005,   // Optimal layout when image is used for read only shader access
-    VK_IMAGE_LAYOUT_CLEAR_OPTIMAL                           = 0x00000006,   // Optimal layout when image is used only for clear operations
-    VK_IMAGE_LAYOUT_TRANSFER_SOURCE_OPTIMAL                 = 0x00000007,   // Optimal layout when image is used only as source of transfer operations
-    VK_IMAGE_LAYOUT_TRANSFER_DESTINATION_OPTIMAL            = 0x00000008,   // Optimal layout when image is used only as destination of transfer operations
+    VK_IMAGE_LAYOUT_TRANSFER_SOURCE_OPTIMAL                 = 0x00000006,   // Optimal layout when image is used only as source of transfer operations
+    VK_IMAGE_LAYOUT_TRANSFER_DESTINATION_OPTIMAL            = 0x00000007,   // Optimal layout when image is used only as destination of transfer operations
 
     VK_ENUM_RANGE(IMAGE_LAYOUT, UNDEFINED, TRANSFER_DESTINATION_OPTIMAL)
 } VkImageLayout;