remove references to obsolete FBConfig (#3297)

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Task/Issue URL:
https://app.asana.com/0/1171671347221384/1208194339440141/f
Tech Design URL:
CC:

**Description**: Remove all references to the obsolete FBConfig file,
which has been replaced by the shared privacy config.

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**Definition of Done (Internal Only)**:

* [ ] Does this PR satisfy our [Definition of
Done](https://app.asana.com/0/1202500774821704/1207634633537039/f)?

**Copy Testing**:

* [ ] Use of correct apostrophes in new copy, ie `’` rather than `'`

**Orientation Testing**:

* [ ] Portrait
* [ ] Landscape

**Device Testing**:

* [ ] iPhone SE (1st Gen)
* [ ] iPhone 8
* [ ] iPhone X
* [ ] iPhone 14 Pro
* [ ] iPad

**OS Testing**:

* [ ] iOS 15
* [ ] iOS 16
* [ ] iOS 17

**Theme Testing**:

* [ ] Light theme
* [ ] Dark theme

---
###### Internal references:
[Software Engineering
Expectations](https://app.asana.com/0/59792373528535/199064865822552)
[Technical Design
Template](https://app.asana.com/0/59792373528535/184709971311943)

Core/AppConfigurationURLProvider.swift

@@ -31,7 +31,6 @@ struct AppConfigurationURLProvider: ConfigurationURLProviding {
         case .privacyConfiguration: return URL.privacyConfig
         case .trackerDataSet: return URL.trackerDataSet
         case .surrogates: return URL.surrogates
-        case .FBConfig: fatalError("This feature is not supported on iOS")
         case .remoteMessagingConfig: return RemoteMessagingClient.Constants.endpoint
         }
     }

Core/Configuration.swift

@@ -30,7 +30,6 @@ public extension Configuration {
         case .privacyConfiguration: return "privacyConfiguration"
         case .surrogates: return "surrogates"
         case .trackerDataSet: return "trackerDataSet"
-        case .FBConfig: return "FBConfig"
         case .remoteMessagingConfig: return "remoteMessagingConfig"
         }
     }

DuckDuckGo.xcodeproj/project.pbxproj

@@ -10650,7 +10650,7 @@
 			repositoryURL = "https://github.com/DuckDuckGo/BrowserServicesKit";
 			requirement = {
 				kind = exactVersion;
-				version = 190.0.0;
+				version = 190.0.1;
 			};
 		};
 		9F8FE9472BAE50E50071E372 /* XCRemoteSwiftPackageReference "lottie-spm" */ = {

DuckDuckGo.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -32,8 +32,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/DuckDuckGo/BrowserServicesKit",
       "state" : {
-        "revision" : "ac53011582abcca4aefd66f15308332273eecb49",
-        "version" : "190.0.0"
+        "revision" : "245750c9ca559813307641e819fb27c6d294339f",
+        "version" : "190.0.1"
       }
     },
     {

DuckDuckGo/ConfigurationURLDebugViewController.swift

@@ -179,7 +179,6 @@ struct CustomConfigurationURLProvider: ConfigurationURLProviding {
     var customPrivacyConfigurationURL: URL?
     var customTrackerDataSetURL: URL?
     var customSurrogatesURL: URL?
-    var customFBConfigURL: URL?
     var customRemoteMessagingConfigURL: URL?
 
     let defaultProvider = AppConfigurationURLProvider()
@@ -194,7 +193,6 @@ struct CustomConfigurationURLProvider: ConfigurationURLProviding {
         case .privacyConfiguration: customURL = customPrivacyConfigurationURL
         case .trackerDataSet: customURL = customTrackerDataSetURL
         case .surrogates: customURL = customSurrogatesURL
-        case .FBConfig: customURL = nil
         case .remoteMessagingConfig: customURL = customRemoteMessagingConfigURL
         }
         return customURL ?? defaultURL