Revert "tests: Add context cancelation (#15374)"

This reverts commit 1e332f0eb1.

Reverting this as tests are failing randomly.

cmd/handler-utils_test.go

@@ -34,10 +34,7 @@ import (
 
 // Tests validate bucket LocationConstraint.
 func TestIsValidLocationContraint(t *testing.T) {
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-
-	obj, fsDir, err := prepareFS(ctx)
+	obj, fsDir, err := prepareFS()
 	if err != nil {
 		t.Fatal(err)
 	}