remove TODOs

src/game/tetromino/placing.c

@@ -55,7 +55,6 @@ static void clear_rows(u8* restrict* restrict rows, u16* const score) {
 	}
 }
 
-// TODO: this is suboptimal, ditch the entire "representing shapes as binary-formatted data" and instead use a switch...case.
 /* writes a shape to the screen */
 static void plcmnt_place(u8* restrict const* restrict row, u8 id, i8vec2 pos) {
 	u8 colour = colour_from_id(id);

src/io/audio.c

@@ -1,4 +1,3 @@
-// TODO: audio stores audio buffers at indicies that the user specifies. (array growth is the next power of two from the idx)
 #include "audio.h"
 
 #include <SDL_audio.h>