feat: remove unused imports

src/lib.rs

@@ -1,23 +1,8 @@
 #![no_std]
 #![feature(asm_experimental_arch)]
 
-extern crate core;
 
-mod macros;
-mod types;
-
-use types::*;
-
-use core::arch::asm;
-
-use arduino_hal::{
-    delay_us,
-    hal::port::{PD0, PD1, PD2, PD3, PD4, PD5, PD6, PD7},
-    pac::PORTD,
-    port::{mode::Output, Pin, PinOps},
-};
 use avr_device::interrupt::free;
-use neopixel_macros::impl_static_pin;
 
 use smart_leds::{SmartLedsWrite, RGB8};