GPUShader: Cleanup: Remove unused uniform_interface.

source/blender/gpu/intern/gpu_shader.c

@@ -530,9 +530,6 @@ void GPU_shader_free(GPUShader *shader)
 	if (shader->program)
 		glDeleteProgram(shader->program);
 
-	if (shader->uniform_interface)
-		MEM_freeN(shader->uniform_interface);
-
 	if (shader->interface)
 		GWN_shaderinterface_discard(shader->interface);
 

source/blender/gpu/intern/gpu_shader_private.h

@@ -35,9 +35,6 @@ struct GPUShader {
 	GLuint geometry; /* handle for geometry shader */
 	GLuint fragment; /* handle for fragment shader */
 
-	void *uniform_interface; /* cached uniform interface for shader. Data depends on shader */
-	/* NOTE: ^-- only FX compositing shaders use this */
-
 	Gwn_ShaderInterface *interface; /* cached uniform & attrib interface for shader */
 };