Exclude Twitter reachability test from CocoaPods installation test

[1ec5]

Before linting the podspecs as part of the CocoaPods installation test, remove @mapbox from the podspecs, keeping CocoaPods from checking whether Twitter is reachable. (It is, trust me.)

Fixes #2187.

/cc @mapbox/navigation-ios

[frederoni]

It's a bit unfortunate if we have to allow warnings. I wonder if we can work around it by serving a dummy url locally?

[1ec5]

This line simply removes the social media URL but doesn’t affect other warnings that would arise. Serving a dummy URL would have exactly the same effect.

[1ec5]

The linter is now complaining about warnings that are cropping up from mapbox/mapbox-gl-native#14959:

 -> MapboxNavigation (0.35.0)
    - NOTE  | xcodebuild:  note: Using new build system
    - NOTE  | [iOS] xcodebuild:  note: Planning build
    - NOTE  | [iOS] xcodebuild:  note: Constructing build description
    - NOTE  | [iOS] xcodebuild:  warning: Capabilities for App may not function correctly because its entitlements use a placeholder team ID. To resolve this, select a development team in the build settings editor. (in target 'App')
    - WARN  | xcodebuild:  /Users/distiller/project/MapboxNavigation/CarPlayManager.swift:359:21: warning: 'setUserTrackingMode(_:animated:)' is deprecated: Use `-setUserTrackingMode:animated:completionHandler:` instead.
    - WARN  | xcodebuild:  /Users/distiller/project/MapboxNavigation/CarPlayManager.swift:633:17: warning: 'setContentInset(_:animated:)' is deprecated: Use `-setContentInset:animated:completionHandler:` instead.
    - WARN  | xcodebuild:  /Users/distiller/project/MapboxNavigation/CarPlayMapViewController.swift:46:27: warning: 'setUserTrackingMode(_:animated:)' is deprecated: Use `-setUserTrackingMode:animated:completionHandler:` instead.
    - WARN  | xcodebuild:  /Users/distiller/project/MapboxNavigation/CarPlayMapViewController.swift:207:17: warning: 'setContentInset(_:animated:)' is deprecated: Use `-setContentInset:animated:completionHandler:` instead.
    - WARN  | xcodebuild:  /Users/distiller/project/MapboxNavigation/CarPlayMapViewController.swift:210:21: warning: 'setUserTrackingMode(_:animated:)' is deprecated: Use `-setUserTrackingMode:animated:completionHandler:` instead.
    - WARN  | xcodebuild:  /Users/distiller/project/MapboxNavigation/CarPlayNavigationViewController.swift:190:17: warning: 'setContentInset(_:animated:)' is deprecated: Use `-setContentInset:animated:completionHandler:` instead.
    - WARN  | xcodebuild:  /Users/distiller/project/MapboxNavigation/NavigationMapView.swift:446:9: warning: 'setUserTrackingMode(_:animated:)' is deprecated: Use `-setUserTrackingMode:animated:completionHandler:` instead.
    - WARN  | xcodebuild:  /Users/distiller/project/MapboxNavigation/RouteMapViewController.swift:336:17: warning: 'setContentInset(_:animated:)' is deprecated: Use `-setContentInset:animated:completionHandler:` instead.
    - NOTE  | xcodebuild:  note: detected encoding of input file as Unicode (UTF-8)

[!] MapboxNavigation did not pass validation, due to 8 warnings (but you can use `--allow-warnings` to ignore them).

This is a good demonstration of the linting test’s value: normally I’m used to running carthage bootstrap in this project, but that would currently get me map SDK v5.1.0 whereas developers using pod install or carthage bootstrap from other projects would get v5.2.0 with the deprecations.

[1ec5]

Split out the deprecation warning fixes as #2192.