Merge pull request #12 from SwiftPackageIndex/remove-xcodeproj

Remove xcodeproj and custom watchOS scheme config

Author: finestructure

.spi.yml

@@ -3,5 +3,3 @@ builder:
   configs:
   - platform: macos-spm
     documentation_targets: [SemanticVersion]
-  - platform: watchos
-    scheme: SemanticVersion-watchOS