None of this code appears to be used anywhere so remove it.
Reviewed-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
 
 
 #ifdef XFS_ILOCK_TRACE
-ktrace_t       *xfs_ilock_trace_buf;
-
 void
 xfs_ilock_trace(xfs_inode_t *ip, int lock, unsigned int lockflags, inst_t *ra)
 {
 
 
 #if defined(XFS_ILOCK_TRACE)
 #define XFS_ILOCK_KTRACE_SIZE  32
-extern ktrace_t *xfs_ilock_trace_buf;
 extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *);
 #else
 #define        xfs_ilock_trace(i,n,f,ra)