Revert "os: handle long path in RemoveAll for windows"

This reverts CL 214437.

Does not fix the issue, and the test was wrong so it did not detect that it did not fix the issue.

Updates #36375

Change-Id: I6a4112035a1e90f4fdafed6fdf4ec9dfc718b571
Reviewed-on: https://go-review.googlesource.com/c/go/+/214601
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/src/os/removeall_noat.go b/src/os/removeall_noat.go
index 6474d2d..c1b43e3 100644
--- a/src/os/removeall_noat.go
+++ b/src/os/removeall_noat.go
@@ -27,7 +27,6 @@
 	}
 
 	// Simple case: if Remove works, we're done.
-	path = fixLongPath(path)
 	err := Remove(path)
 	if err == nil || IsNotExist(err) {
 		return nil
diff --git a/src/os/removeall_test.go b/src/os/removeall_test.go
index 6fb31c2..8a71f68 100644
--- a/src/os/removeall_test.go
+++ b/src/os/removeall_test.go
@@ -206,26 +206,6 @@
 	}
 }
 
-func TestRemoveAllLongPathWindows(t *testing.T) {
-	startPath, err := ioutil.TempDir("", "TestRemoveAllLongPath-")
-	if err != nil {
-		t.Fatalf("Could not create TempDir: %s", err)
-	}
-	defer RemoveAll(startPath)
-
-	// Make a long path
-	err = MkdirAll(filepath.Join(startPath, "foo", "bar", strings.Repeat("a", 150),
-		strings.Repeat("b", 150)), ModePerm)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	err = RemoveAll("foo")
-	if err != nil {
-		t.Fatal(err)
-	}
-}
-
 func TestRemoveAllDot(t *testing.T) {
 	prevDir, err := Getwd()
 	if err != nil {