[ExplicitModuleBuilds][Tests] Remove test of prior approach at handling dependency PCH

As of swiftlang/swift#69109 we no longer propagate the PCH to dependencies in non-cached builds.
For cached builds, this functionality is tested in 'testCacheBuildEndToEndWithBinaryHeaderDeps'.

Author: artemcm

Tests/SwiftDriverTests/ExplicitModuleBuildTests.swift

@@ -1016,82 +1016,6 @@ final class ExplicitModuleBuildTests: XCTestCase {
     }
   }
 
-  func testExplicitModuleBuildEndToEndWithBinaryHeaderDeps() throws {
-    try withTemporaryDirectory { path in
-      try localFileSystem.changeCurrentWorkingDirectory(to: path)
-      let moduleCachePath = path.appending(component: "ModuleCache")
-      try localFileSystem.createDirectory(moduleCachePath)
-      let PCHPath = path.appending(component: "PCH")
-      try localFileSystem.createDirectory(PCHPath)
-      let FooInstallPath = path.appending(component: "Foo")
-      try localFileSystem.createDirectory(FooInstallPath)
-      let foo = path.appending(component: "foo.swift")
-      try localFileSystem.writeFileContents(foo) {
-        $0.send("extension Profiler {")
-        $0.send("    public static let count: Int = 42")
-        $0.send("}")
-      }
-      let fooHeader = path.appending(component: "foo.h")
-      try localFileSystem.writeFileContents(fooHeader) {
-        $0.send("struct Profiler { void* ptr; };")
-      }
-      let main = path.appending(component: "main.swift")
-      try localFileSystem.writeFileContents(main) {
-        $0.send("import Foo")
-      }
-      let sdkArgumentsForTesting = (try? Driver.sdkArgumentsForTesting()) ?? []
-
-      var fooBuildDriver = try Driver(args: ["swiftc",
-                                             "-explicit-module-build",
-                                             "-module-cache-path", moduleCachePath.nativePathString(escaped: true),
-                                             "-working-directory", path.nativePathString(escaped: true),
-                                             foo.nativePathString(escaped: true),
-                                             "-emit-module", "-wmo", "-module-name", "Foo",
-                                             "-emit-module-path", FooInstallPath.nativePathString(escaped: true),
-                                             "-import-objc-header", fooHeader.nativePathString(escaped: true),
-                                             "-pch-output-dir", PCHPath.nativePathString(escaped: true),
-                                             FooInstallPath.appending(component: "Foo.swiftmodule").nativePathString(escaped: true)]
-                                      + sdkArgumentsForTesting,
-                                      env: ProcessEnv.vars)
-
-      // Ensure this tooling supports this functionality
-      let dependencyOracle = InterModuleDependencyOracle()
-      let scanLibPath = try XCTUnwrap(fooBuildDriver.toolchain.lookupSwiftScanLib())
-      guard try dependencyOracle
-              .verifyOrCreateScannerInstance(fileSystem: localFileSystem,
-                                             swiftScanLibPath: scanLibPath) else {
-        XCTFail("Dependency scanner library not found")
-        return
-      }
-      guard try dependencyOracle.supportsBinaryModuleHeaderDependencies() else {
-        throw XCTSkip("libSwiftScan does not support binary module header dependencies.")
-      }
-
-      let fooJobs = try fooBuildDriver.planBuild()
-      try fooBuildDriver.run(jobs: fooJobs)
-      XCTAssertFalse(fooBuildDriver.diagnosticEngine.hasErrors)
-
-      var driver = try Driver(args: ["swiftc",
-                                     "-I", FooInstallPath.nativePathString(escaped: true),
-                                     "-explicit-module-build", "-emit-module", "-emit-module-path",
-                                     path.appending(component: "testEMBETEWBHD.swiftmodule").nativePathString(escaped: true),
-                                     "-module-cache-path", moduleCachePath.nativePathString(escaped: true),
-                                     "-working-directory", path.nativePathString(escaped: true),
-                                     main.nativePathString(escaped: true)] + sdkArgumentsForTesting,
-                              env: ProcessEnv.vars)
-      let jobs = try driver.planBuild()
-      let compileJob = try XCTUnwrap(jobs.first(where: { $0.description == "Compiling main main.swift" }))
-
-      // Ensure the header dependency of Foo shows up on client compile commands
-      XCTAssertTrue(compileJob.commandLine.contains(subsequence: [.flag("-Xcc"),
-                                                                  .flag("-include-pch"),
-                                                                  .flag("-Xcc"),
-                                                                  .path(.absolute(PCHPath.appending(component: "foo.pch")))]))
-      try driver.run(jobs: jobs)
-      XCTAssertFalse(driver.diagnosticEngine.hasErrors)
-    }
-  }
-
   func testExplicitModuleBuildEndToEnd() throws {
     try withTemporaryDirectory { path in
       try localFileSystem.changeCurrentWorkingDirectory(to: path)