iwlwifi: pcie: remove pointless debugfs parsing for csr file

We don't actually care about the value at all, just making sure
that we can successfully parse a single integer value, but that's
entirely pointless - remove it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/pcie/trans.c

@@ -2450,16 +2450,6 @@ static ssize_t iwl_dbgfs_csr_write(struct file *file,
 				   size_t count, loff_t *ppos)
 {
 	struct iwl_trans *trans = file->private_data;
-	char buf[8];
-	int buf_size;
-	int csr;
-
-	memset(buf, 0, sizeof(buf));
-	buf_size = min(count, sizeof(buf) -  1);
-	if (copy_from_user(buf, user_buf, buf_size))
-		return -EFAULT;
-	if (sscanf(buf, "%d", &csr) != 1)
-		return -EFAULT;
 
 	iwl_pcie_dump_csr(trans);