### Apache Airflow version

main (development)

### What happened

On the Task Instances table, one can click on `Edit Record` and be directed to a `Edit Task Instance` page. There, if you try to change the state, it will simply not update nor are there any errors in the browser console.


<img width="608" alt="Screen Shot 2022-01-04 at 10 10 52 AM" src="https://user-images.githubusercontent.com/4600967/148101472-fb6076fc-3fc3-44c4-a022-6625d5112551.png">


### What you expected to happen

Changes to state should actually update the task instance.

### How to reproduce

Try to use the `Edit Task Instance` page

### Operating System

Mac OSx

### Versions of Apache Airflow Providers

_No response_

### Deployment

Virtualenv installation

### Deployment details

_No response_

### Anything else

This page is redundant, as a user can successfully edit task instance states from the table. Instead of wiring up the correct actions, I say we should just remove the `Edit Task Instance` page entirely.

### Are you willing to submit PR?

- [X] Yes I am willing to submit a PR!

### Code of Conduct

- [X] I agree to follow this project's [Code of Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)

resp = admin_client.post("last_dagruns", follow_redirects=True)
    check_content_in_response("example_bash_operator", resp)
def test_last_dagruns_success_when_selecting_dags(admin_client):
    resp = admin_client.post(
        "last_dagruns", data={"dag_ids": ["example_subdag_operator"]}, follow_redirects=True
    )
    assert resp.status_code == 200
    stats = json.loads(resp.data.decode("utf-8"))
    assert "example_bash_operator" not in stats
    assert "example_subdag_operator" in stats
    
    resp = admin_client.post(
        "last_dagruns",
        data={"dag_ids": ["example_subdag_operator", "example_bash_operator"]},
        follow_redirects=True,
    )
    stats = json.loads(resp.data.decode("utf-8"))
    assert "example_bash_operator" in stats
    assert "example_subdag_operator" in stats
    check_content_not_in_response("example_xcom", resp)
def test_code(admin_client):
    url = "code?dag_id=example_bash_operator"
    resp = admin_client.get(url, follow_redirects=True)
    check_content_not_in_response("Failed to load DAG file Code", resp)
    check_content_in_response("example_bash_operator", resp)
def test_code_from_db(admin_client):