Remove memory pool

FossilOrigin-Name: 0097baa3a78b36f6358e9877ad0c14ed4225486be33b821a408adf2e0213e0c0

src/monster.mm

@@ -102,7 +102,7 @@ void
 monsterclear() // called after map start of when toggling edit mode to
                // reset/spawn all monsters to initial state
 {
-	loopv(monsters) gp()->dealloc(monsters[i], sizeof(dynent));
+	loopv(monsters) free(monsters[i]);
 	monsters.setsize(0);
 	numkilled = 0;
 	monstertotal = 0;