[PM-24549] Remove feature flag: use-pricing-service (#6567)

* Remove feature flag and move StaticStore plans to MockPlans for tests

* Remove old plan models / move sponsored plans out of StaticStore

* Run dotnet format

* Add pricing URI to Development appsettings for local development and integration tests

* Updated Api Integration tests to get current plan type

* Run dotnet format

* Fix failing tests

bitwarden_license/test/Scim.IntegrationTest/appsettings.Development.json

@@ -0,0 +1,36 @@
+{
+  "globalSettings": {
+    "baseServiceUri": {
+      "vault": "https://localhost:8080",
+      "api": "http://localhost:4000",
+      "identity": "http://localhost:33656",
+      "admin": "http://localhost:62911",
+      "notifications": "http://localhost:61840",
+      "sso": "http://localhost:51822",
+      "internalNotifications": "http://localhost:61840",
+      "internalAdmin": "http://localhost:62911",
+      "internalIdentity": "http://localhost:33656",
+      "internalApi": "http://localhost:4000",
+      "internalVault": "https://localhost:8080",
+      "internalSso": "http://localhost:51822",
+      "internalScim": "http://localhost:44559"
+    },
+    "mail": {
+      "smtp": {
+        "host": "localhost",
+        "port": 10250
+      }
+    },
+    "attachment": {
+      "connectionString": "UseDevelopmentStorage=true",
+      "baseUrl": "http://localhost:4000/attachments/"
+    },
+    "events": {
+      "connectionString": "UseDevelopmentStorage=true"
+    },
+    "storage": {
+      "connectionString": "UseDevelopmentStorage=true"
+    },
+    "pricingUri": "https://billingpricing.qa.bitwarden.pw"
+  }
+}