erasure-code/clay: remove unused common/debug.h include

Remove unnecessary include to reduce build
dependencies.

Signed-off-by: Kefu Chai <[email protected]>

Author: tchaikov

src/erasure-code/clay/ErasureCodePluginClay.cc

@@ -15,7 +15,6 @@
  */
 
 #include "ceph_ver.h"
-#include "common/debug.h"
 #include "ErasureCodePluginClay.h"
 #include "ErasureCodeClay.h"