Remove unused imports

Source/swiftlint/Commands/Analyze.swift

@@ -1,5 +1,4 @@
 import ArgumentParser
-import SwiftLintFramework
 
 extension SwiftLint {
     struct Analyze: ParsableCommand {

Source/swiftlint/Commands/Lint.swift

@@ -1,5 +1,4 @@
 import ArgumentParser
-import SwiftLintFramework
 
 extension SwiftLint {
     struct Lint: ParsableCommand {

Source/swiftlint/Commands/SwiftLint.swift

@@ -1,5 +1,5 @@
 import ArgumentParser
-import Foundation
+import SwiftLintFramework
 
 struct SwiftLint: ParsableCommand {
     static var configuration = CommandConfiguration(
@@ -25,13 +25,11 @@ struct SwiftLint: ParsableCommand {
             return
         }
 
-        fputs(
+        queuedPrintError(
             """
             The `swiftlint autocorrect` command is no longer available.
             Please use `swiftlint --fix` instead.
-
-            """,
-            stderr
+            """
         )
         var newArguments = argumentsToCheck
         newArguments[0] = "--fix"

Source/swiftlint/main.swift

@@ -1,5 +1,11 @@
 import Dispatch
-import Foundation
+#if canImport(Darwin)
+import Darwin
+#elseif canImport(Glibc)
+import Glibc
+#else
+#error("Unsupported platform")
+#endif
 
 DispatchQueue.global().async {
     SwiftLint.mainHandlingDeprecatedCommands()