drivers: gnss: remove dangerous loop

When ubx_m10_ubx_cfg_rst is returning something negative there is a loop
in the code which in turn can easily turn into an endless loop if the
function is never returning something positive or zero.

Signed-off-by: Andreas Klinger <ak@it-klinger.de>

drivers/gnss/gnss_u_blox_m10.c

@@ -951,9 +951,6 @@ static int ubx_m10_configure(const struct device *dev)
 
 reset:
 	ret = ubx_m10_ubx_cfg_rst(dev, UBX_CFG_RST_RESET_MODE_CONTROLLED_GNSS_START);
-	if (ret < 0) {
-		goto reset;
-	}
 
 	return ret;
 }