Remove a couple of exceptions from the deprecated scheme syntax warning

src/syscall/fs.rs

@@ -81,11 +81,6 @@ pub fn open(raw_path: UserSliceRo, flags: usize) -> Result<FileHandle> {
         && !path_buf.starts_with(':')
         && path_buf != "rand:" // FIXME Remove exception at next rustc update
         && !path_buf.starts_with("thisproc:") // bootstrap needs redox-rt update
-        && path_buf != "memory:" // ramfs, escalated
-        && path_buf != "event:" // ipcd, orbterm, old redox-event in getty
-        && path_buf != "file:/etc/shadow" // login, orblogin
-        && path_buf != "file:/etc/passwd" // login, orblogin
-        && path_buf != "time:4" // launcher
         && !path_buf.starts_with("display")
         && !path_buf.starts_with("orbital:")
     {
@@ -95,7 +90,7 @@ pub fn open(raw_path: UserSliceRo, flags: usize) -> Result<FileHandle> {
             context::current().read().name
         );
     }
-    
+
     let path = RedoxPath::from_absolute(&path_buf).ok_or(Error::new(EINVAL))?;
     let (scheme_name, reference) = path.as_parts().ok_or(Error::new(EINVAL))?;