G3 G4 SKU removal (Azure#23099)

Author: guptashweta9

specification/mobilenetwork/resource-manager/Microsoft.MobileNetwork/stable/2022-11-01/common.json

@@ -455,8 +455,6 @@
         "G0",
         "G1",
         "G2",
-        "G3",
-        "G4",
         "G5",
         "G10"
       ],
@@ -476,14 +474,6 @@
             "value": "G2",
             "description": "2 Gbps, 200 active SIMs plan, 10 RANs"
           },
-          {
-            "value": "G3",
-            "description": "3 Gbps, 300 active SIMs plan"
-          },
-          {
-            "value": "G4",
-            "description": "4 Gbps, 400 active SIMs plan"
-          },
           {
             "value": "G5",
             "description": "5 Gbps, 500 active SIMs plan"