refactor(docs): remove swift-docc-plugin

Author: Aaron-Ritter

FusionAuthSDK.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -18,8 +18,7 @@ let package = Package(
     ],
     dependencies: [
         .package(url: "https://github.com/openid/AppAuth-iOS.git", exact: "1.7.5"),
-        .package(url: "https://github.com/realm/SwiftLint.git", from: "0.54.0"),
-        .package(url: "https://github.com/swiftlang/swift-docc-plugin.git", exact: "1.4.3")
+        .package(url: "https://github.com/realm/SwiftLint.git", from: "0.54.0")
     ],
     targets: [
         // Targets are the basic building blocks of a package, defining a module or a test suite.