nfs4: Remove unneeded semicolon

Fixes coccicheck warning:

include/linux/nfs4.h:298:2-3: Unneeded semicolon

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zheng Bin <zhengbin13@huawei.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

include/linux/nfs4.h

@@ -295,7 +295,7 @@ static inline bool seqid_mutating_err(u32 err)
 	case NFS4ERR_NOFILEHANDLE:
 	case NFS4ERR_MOVED:
 		return false;
-	};
+	}
 	return true;
 }