storage/driver-block: Remove id method from Disk trait

storage/ahcid/src/ahci/disk_ata.rs

@@ -154,10 +154,6 @@ impl DiskATA {
 }
 
 impl Disk for DiskATA {
-    fn id(&self) -> usize {
-        self.id
-    }
-
     fn size(&mut self) -> u64 {
         self.size
     }

storage/ahcid/src/ahci/disk_atapi.rs

@@ -72,10 +72,6 @@ impl DiskATAPI {
 }
 
 impl Disk for DiskATAPI {
-    fn id(&self) -> usize {
-        self.id
-    }
-
     fn size(&mut self) -> u64 {
         match self.read_capacity() {
             Ok((blk_count, blk_size)) => (blk_count as u64) * (blk_size as u64),

storage/bcm2835-sdhcid/src/sd/mod.rs

@@ -733,10 +733,6 @@ impl SdHostCtrl {
 }
 
 impl Disk for SdHostCtrl {
-    fn id(&self) -> usize {
-        0xdead_dead
-    }
-
     fn size(&mut self) -> u64 {
         //assert 512MiB
         self.size

storage/driver-block/src/lib.rs

@@ -54,7 +54,6 @@ pub fn block_read(
 }
 
 pub trait Disk {
-    fn id(&self) -> usize;
     fn block_length(&mut self) -> syscall::error::Result<u32>;
     fn size(&mut self) -> u64;
 

storage/ided/src/ide.rs

@@ -169,10 +169,6 @@ pub struct AtaDisk {
 }
 
 impl Disk for AtaDisk {
-    fn id(&self) -> usize {
-        self.chan_i << 1 | self.dev as usize
-    }
-
     fn size(&mut self) -> u64 {
         self.size
     }