Revert "world: attempt to hardcode maximum light"

This reverts commit bdf580767a.

protocol/src/types/nibble.rs

@@ -41,10 +41,4 @@ impl Array {
             self.data[i] = (old & 0x0F) | ((val & 0xF) << 4);
         }
     }
-
-    pub fn set_all(&mut self) {
-        for i in 0..self.data.len() {
-            self.data[i] = 0xFF;
-        }
-    }
 }

src/world/mod.rs

@@ -1212,10 +1212,6 @@ impl World {
                     let _bits = LenPrefixed::<VarInt, u64>::read_from(&mut data)?.data;
                 } else if self.protocol_version >= 451 {
                     // Skylight in update skylight packet for 1.14+
-                    // TODO: lighting in same packet in 1.18+
-                    // fullbright
-                    section.block_light.set_all();
-                    section.sky_light.set_all();
                 } else {
                     data.read_exact(&mut section.block_light.data)?;
                     data.read_exact(&mut section.sky_light.data)?;