Clean up codebase, rm texture, matrix -> load

src/context.c

@@ -3,12 +3,8 @@
 #ifdef EMSCRIPTEN
 #include <GL/gl.h>
 #else
-#ifdef GLAD
 #include <glad.h>
 #include <GLFW/glfw3.h>
-#else
-#include <GL/glew.h>
-#endif
 #endif
 
 void set_clean_color_context(unsigned char r, unsigned char g, unsigned char b)
@@ -22,12 +18,7 @@ int init_context(void)
 #ifdef EMSCRIPTEN
 	return 1;
 #else
-#ifdef GLAD
-
 	return gladLoadGLLoader((GLADloadproc)glfwGetProcAddress);
-#else
-	return glewInit();
-#endif
 #endif
 }