Remove unused Misc device type

kernel/src/fs/device.rs

@@ -43,8 +43,6 @@ impl Debug for dyn Device {
 pub enum DeviceType {
     Char,
     Block,
-    #[expect(dead_code)]
-    Misc,
 }
 
 /// Adds a device node in `/dev`.

kernel/src/fs/utils/inode.rs

@@ -75,7 +75,6 @@ impl From<DeviceType> for InodeType {
         match type_ {
             DeviceType::Char => InodeType::CharDevice,
             DeviceType::Block => InodeType::BlockDevice,
-            DeviceType::Misc => InodeType::CharDevice,
         }
     }
 }