Remove .swift-version when verifying podspec (#787)

Author: andersio

.github/workflows/master.yml

@@ -48,6 +48,9 @@ jobs:
         uses: actions/checkout@v2
       - name: CocoaPods verification
         run: |
+          # To work around the lint error: "ERROR | swift: Specification `ReactiveSwift` specifies an inconsistent `swift_version` (`4.1`) compared to the one present in your `.swift-version` file (`4.1.2`). Please remove the `.swift-version` file which is now deprecated and only use the `swift_version` attribute within your podspec."
+          # `.swift-version` is for swiftenv, not for CocoaPods, so we can't remove the file as suggested.
+          rm .swift-version
           pod repo update
           pod lib lint --use-libraries