Revert "Relands "[YAMLVFSWriter][Test][NFC] Add couple tests""

This reverts commit 49b32d8.

llvm/unittests/Support/VirtualFileSystemTest.cpp

@@ -2274,60 +2274,3 @@ TEST_F(VFSFromYAMLTest, YAMLVFSWriterTestHandleDirs) {
   EXPECT_FALSE(FS->exists(_b.Path + "/b"));
   EXPECT_FALSE(FS->exists(_c.Path + "/c"));
 }
-
-TEST_F(VFSFromYAMLTest, YAMLVFSWriterTestNestedDirs) {
-  ScopedDir TestDirectory("virtual-file-system-test", /*Unique*/ true);
-  ScopedDir a(TestDirectory + "/a");
-  ScopedDir _a_aa(TestDirectory + "/a/aa");
-  ScopedDir b(TestDirectory + "/b");
-  ScopedDir _b_bb(TestDirectory + "/b/bb");
-  ScopedDir c(TestDirectory + "/c");
-  ScopedDir _c_cc(TestDirectory + "/c/cc");
-
-  vfs::YAMLVFSWriter VFSWriter;
-  VFSWriter.addDirectoryMapping(a.Path, "//root/a");
-  VFSWriter.addDirectoryMapping(_a_aa.Path, "//root/a/aa");
-  VFSWriter.addDirectoryMapping(b.Path, "//root/b");
-  VFSWriter.addDirectoryMapping(_b_bb.Path, "//root/b/bb");
-  VFSWriter.addDirectoryMapping(c.Path, "//root/c");
-  VFSWriter.addDirectoryMapping(_c_cc.Path, "//root/c/cc");
-
-  std::string Buffer;
-  raw_string_ostream OS(Buffer);
-  VFSWriter.write(OS);
-  OS.flush();
-
-  IntrusiveRefCntPtr<ErrorDummyFileSystem> Lower(new ErrorDummyFileSystem());
-  Lower->addDirectory("//root/a");
-  Lower->addDirectory("//root/a/aa");
-  Lower->addDirectory("//root/b");
-  Lower->addDirectory("//root/b/bb");
-  Lower->addDirectory("//root/c");
-  Lower->addDirectory("//root/c/cc");
-
-  IntrusiveRefCntPtr<vfs::FileSystem> FS = getFromYAMLRawString(Buffer, Lower);
-  ASSERT_TRUE(FS.get() != nullptr);
-
-  EXPECT_TRUE(FS->exists(a.Path));
-  EXPECT_TRUE(FS->exists(_a_aa.Path));
-  EXPECT_TRUE(FS->exists(b.Path));
-  EXPECT_TRUE(FS->exists(_b_bb.Path));
-  EXPECT_TRUE(FS->exists(c.Path));
-  EXPECT_TRUE(FS->exists(_c_cc.Path));
-}
-
-TEST(YAMLVFSWriterTest, HandleRootAsVPath) {
-  llvm::SmallVector<char, 32> Tmp;
-  llvm::sys::path::system_temp_directory(false, Tmp);
-  llvm::StringRef Root = llvm::sys::path::root_path(StringRef(Tmp.data(), Tmp.size())).str();
-  llvm::SmallVector<char, 32> Subdir(Root.begin(), Root.end());
-  llvm::sys::path::append(Subdir, "foo");
-
-  llvm::vfs::YAMLVFSWriter W;
-  W.addDirectoryMapping(Root, "/tmp");
-  W.addDirectoryMapping(std::string{Subdir.begin(), Subdir.end()} + "/foo", "/tmp/bar");
-  std::string Dump;
-  llvm::raw_string_ostream ToBeIgnored(Dump);
-
-  EXPECT_NO_FATAL_FAILURE(W.write(ToBeIgnored));
-}