[Tests] Remove test of static linking against musl.

We don't support plain musl for now, so don't bother trying to do a static linking test for it. rdar://138021505

Author: al45tair

Tests/SwiftDriverTests/SwiftDriverTests.swift

@@ -2320,39 +2320,6 @@ final class SwiftDriverTests: XCTestCase {
  XCTAssertFalse(cmd.contains(.flag("-dylib")))
  XCTAssertFalse(cmd.contains(.flag("-shared")))
  }
-
- do {
- // executable linking linux static stdlib with musl
- var driver = try Driver(args: commonArgs + [
- "-emit-executable", "-Osize", "-static-stdlib", "-static-executable", "-target", "x86_64-unknown-linux-musl"
- ], env: env)
- let plannedJobs = try driver.planBuild()
-
- XCTAssertEqual(plannedJobs.count, 4)
-
- let autolinkExtractJob = plannedJobs[2]
- XCTAssertEqual(autolinkExtractJob.kind, .autolinkExtract)
-
- let autolinkCmd = autolinkExtractJob.commandLine
- XCTAssertTrue(commandContainsTemporaryPath(autolinkCmd, "foo.o"))
- XCTAssertTrue(commandContainsTemporaryPath(autolinkCmd, "bar.o"))
- XCTAssertTrue(commandContainsTemporaryPath(autolinkCmd, "Test.autolink"))
-
- let linkJob = plannedJobs[3]
- let cmd = linkJob.commandLine
- XCTAssertTrue(cmd.contains(.flag("-o")))
- XCTAssertTrue(commandContainsTemporaryPath(cmd, "foo.o"))
- XCTAssertTrue(commandContainsTemporaryPath(cmd, "bar.o"))
- XCTAssertTrue(cmd.contains(.flag("--start-group")))
- XCTAssertTrue(cmd.contains(.flag("--end-group")))
- XCTAssertTrue(cmd.contains(.flag("-Os")))
- print("Static stdlib with musl link job: \(cmd.joinedUnresolvedArguments)")
- //XCTAssertTrue(cmd.contains(.flag("-static")))
- XCTAssertEqual(linkJob.outputs[0].file, try toPath("Test"))
-
- XCTAssertFalse(cmd.contains(.flag("-dylib")))
- XCTAssertFalse(cmd.contains(.flag("-shared")))
- }
  #endif
 
  do {