fix: Revert "feat(3P): add Grid Charge Start SOC modbus 191 (#117)" (#131)

This reverts commit 6ec1151.

Author: andrein

pv_inverter/packages/deye_hybrid_3p/battery.yaml

@@ -817,16 +817,3 @@ number:
     value_type: U_WORD
     mode: box
     icon: "mdi:battery-charging-50"
-
-  - platform: modbus_controller
-    modbus_controller_id: ${modbus_controller_id} 
-    name: "Force Grid Charge Start SOC"
-    register_type: holding
-    address: 191
-    value_type: U_WORD
-    unit_of_measurement: "%"
-    icon: "mdi:battery-charging-high"
-    entity_category: config
-    min_value: 0
-    max_value: 100
-    step: 1