drivers: sensor: lsm6dsl: Remove unused variable and label
drivers: sensor: lsm6dsl: Remove unused variable and label

Remove variable and label that are not used to remove compiler
warnings.

Signed-off-by: Benjamin Björnsson <8044ef148b03b50e606a03e6e88e2c21cb9a92a8@gmail.com>

zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,finikorg/zephyr,finikorg/zephyr,galak/zephyr,galak/zephyr,finikorg/zephyr