revert unnecessary changes

Author: Wang Lun

Sources/SKTestSupport/Utils.swift

@@ -32,7 +32,7 @@ extension Language {
     case "cpp": self = .cpp
     case "m": self = .objective_c
     case "mm": self = .objective_cpp
-    case "swift", "swiftinterface": self = .swift
+    case "swift": self = .swift
     case "md": self = .markdown
     case "tutorial": self = .tutorial
     default: return nil

Sources/SourceKitLSP/Swift/GeneratedInterfaceDocumentURLData.swift

@@ -67,14 +67,7 @@ package struct GeneratedInterfaceDocumentURLData: Hashable, ReferenceURLData {
     self.moduleName = moduleName
     self.groupName = groupName
     self.sourcekitdDocumentName = sourcekitdDocumentName
-    if let referenceDocumentURL = try? ReferenceDocumentURL(from: primaryFile),
-       let fileURL = referenceDocumentURL.buildSettingsFile.fileURL {
-      self.buildSettingsFrom = DocumentURI(fileURL)
-    } else if let fileURL = primaryFile.fileURL {
-      self.buildSettingsFrom = DocumentURI(fileURL)
-    } else {
-      self.buildSettingsFrom = primaryFile
-    }
+    self.buildSettingsFrom = primaryFile.buildSettingsFile
   }
 
   init(queryItems: [URLQueryItem]) throws {

Sources/SourceKitLSP/Swift/ReferenceDocumentURL.swift

@@ -122,25 +122,14 @@ package enum ReferenceDocumentURL {
   var buildSettingsFile: DocumentURI {
     switch self {
     case .macroExpansion(let data): return data.primaryFile
-    case .generatedInterface(let data):
-      if let referenceDocumentURL = try? ReferenceDocumentURL(from: data.buildSettingsFrom),
-         let fileURL = referenceDocumentURL.buildSettingsFile.fileURL {
-        return DocumentURI(fileURL)
-      }
-      return data.buildSettingsFrom
+    case .generatedInterface(let data): return data.buildSettingsFrom
     }
   }
 
   var primaryFile: DocumentURI? {
     switch self {
     case .macroExpansion(let data): return data.primaryFile
-    case .generatedInterface(let data):
-      if let referenceDocumentURL = try? ReferenceDocumentURL(from: data.buildSettingsFrom),
-         let primaryFile = referenceDocumentURL.primaryFile,
-         let fileURL = primaryFile.fileURL {
-        return DocumentURI(fileURL)
-      }
-      return data.buildSettingsFrom.primaryFile
+    case .generatedInterface(let data): return data.buildSettingsFrom.primaryFile
     }
   }
 }