Remove snapshotFromDisk

The function isn’t used anymore

Author: ahoppen

Sources/SourceKitLSP/Swift/SwiftLanguageService.swift

@@ -279,21 +279,6 @@ package actor SwiftLanguageService: LanguageService, Sendable {
     }
   }
 
-  func snapshotFromDisk(for uri: DocumentURI) async throws -> DocumentSnapshot {
-    switch try? ReferenceDocumentURL(from: uri) {
-    case .macroExpansion(let data):
-      let content = try await self.macroExpansionManager.macroExpansion(for: data)
-      return DocumentSnapshot(uri: uri, language: .swift, version: 0, lineTable: LineTable(content))
-    case .generatedInterface(let data):
-      return try await self.generatedInterfaceManager.snapshot(of: data)
-    case nil:
-      guard let snapshot = try DocumentSnapshot(withContentsFromDisk: uri, language: .swift) else {
-        throw ResponseError.unknown("Failed to find snapshot for '\(uri)'")
-      }
-      return snapshot
-    }
-  }
-
   func buildSettings(for document: DocumentURI, fallbackAfterTimeout: Bool) async -> FileBuildSettings? {
     let buildSettingsFile = document.buildSettingsFile