Revert "procfs: add '/proc/pid/stat' to mckernel side and fix its comm"

This reverts commit b70d470e20.

That commit had been landed too fast after a mistake during migration
from old to new gerrit that didn't keep -1 vote ; it needs some fix

Change-Id: Ifc8a23e42449dfe471049270b4706e9b137e096e

kernel/syscall.c

@@ -237,7 +237,6 @@ long do_syscall(struct syscall_request *req, int cpu)
 
 	dkprintf("%s: syscall num: %d waiting for Linux.. \n",
 		__FUNCTION__, req->number);
-	proc->forwarding = 1;
 
 #define	STATUS_IN_PROGRESS	0
 #define	STATUS_COMPLETED	1
@@ -399,7 +398,6 @@ long do_syscall(struct syscall_request *req, int cpu)
 			send_syscall(&req2, cpu, &res);
 		}
 	}
-	proc->forwarding = 0;
 	if (req->rtid == -1) {
 		preempt_enable();
 	}