fix: remove incorrect temperature divisor for MikroTik sensors

MikroTik mtxrGaugeTable temperature sensors report values in whole
degrees Celsius, not tenths. The MIB defines the unit as 'celsius(1)'
without the 'deci-' prefix used for voltage (dV), current (dA), and
power (dW).

This matches LibreNMS behavior which does not apply a divisor to
temperature sensors.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

priv/profiles/os_discovery/routeros.yaml

@@ -28,7 +28,6 @@ modules:
                     num_oid: '.1.3.6.1.4.1.14988.1.1.3.100.1.3.{{ $index }}'
                     descr: MIKROTIK-MIB::mtxrGaugeName
                     group: System
-                    divisor: 10
                     index: 'mtxrGaugeTemperature.{{ $index }}'
                     skip_values:
                         -   oid: MIKROTIK-MIB::mtxrGaugeUnit