disk: remove some unused things

src/disk.c

@@ -27,7 +27,6 @@ void ide_send_command(unsigned char command) {
 
 unsigned short ide_read_data() {
     unsigned short data;
-    //__asm__ __volatile__("inw %1, %0" : "=a" (data) : "d" (IDE_DATA));
     __asm__ __volatile__("inw %w1, %0" : "=a" (data) : "Nd" (IDE_DATA));
     return data;
 }
@@ -38,12 +37,6 @@ unsigned char ide_read_status() {
     return status;
 }
 
-uint16_t inw(uint16_t port) {
-    uint16_t value;
-    __asm__ __volatile__("inw %w1, %w0" : "=a" (value) : "Nd" (port));
-    return value;
-}
-
 //https://wiki.osdev.org/ATA_PIO_Mode#IDENTIFY_command
 void get_disk_info(disk_info *info) {
     outportb(0x1F6, 0xA0);//select master drive, 0xA0 - master, 0xB0 - slave