remove data_size parameter from GLUniform

src/shader.h

@@ -17,16 +17,10 @@ struct GLUniform
 	GLuint idx;
 	GLint location;
 	GLint block_idx;
-
 	GLenum uniform_type; // NOTE: GL_UNSIGNED_INT, GL_FLOAT_VEC4
 	GLint num_elements; // NOTE: 1 unless uniform is an array of base types
-
-	// FIXME: we can't actually get this from opengl introspection API, we have
-	// 	to infer it from the uniform type...
-	GLint data_size; // NOTE: total size in bytes...
 	GLint array_stride; // NOTE: bytes between array elements
 	GLint uniform_offset; // NOTE: byte offset from beginning of uniform
-
 	char* name;
 };