Revert "GPUShaderCreateInfo for interface abstraction"

This reverts commit 8fb2ff458b.
Missing some files.

source/blender/gpu/shaders/gpu_shader_2D_vert.glsl

@@ -1,13 +1,11 @@
 
-#ifndef USE_GPU_SHADER_CREATE_INFO
 uniform mat4 ModelViewProjectionMatrix;
 
-#  ifdef UV_POS
+#ifdef UV_POS
 in vec2 u;
-#    define pos u
-#  else
+#  define pos u
+#else
 in vec2 pos;
-#  endif
 #endif
 
 void main()