novacustom-mtl: Remove POWER_MGMT_SUPPORT false to make it True

Signed-off-by: Filip Gołaś <[email protected]>

Author: philipanda

platform-configs/include/novacustom-mtl.robot

@@ -35,8 +35,6 @@ ${CUSTOM_FAN_CURVE_PERFORMANCE_MODE_SUPPORT}=       ${FALSE}
 
 ${L3_CACHE_SUPPORT}=                                ${TRUE}
 
-# Only S0ix is available on MTL
-${DASHARO_POWER_MGMT_MENU_SUPPORT}=                 ${FALSE}
 
 # DTS E2E variables
 &{DTS_TEST_EXPORTS}=