tooling: removing the auto-close bot

This commit fixes Azure#19098 by removing the auto-close bot.

Whilst I can understand that Service Teams maybe unable to review all Pull Requests
in a timely manner, unfortunately I've had a number of Pull Requests at this point
which end up with me posting every 2 weeks to keep the Pull Request open:

* Azure#17987 (comment)
* Azure#18269 (comment)

Whilst this does mean there'll be more Pull Requests open until the Service Team can
take a look at them - removing this user hostile bot improves the contribution experience.

Author: tombuildsstuff

.github/fabricbot.json

@@ -3091,158 +3091,6 @@
       },
       "disabled": true
     },
-    {
-      "taskType": "scheduled",
-      "capabilityId": "ScheduledSearch",
-      "subCapability": "ScheduledSearch",
-      "version": "1.1",
-      "config": {
-        "frequency": [
-          {
-            "weekDay": 1,
-            "hours": [
-              0
-            ],
-            "timezoneOffset": 8
-          }
-        ],
-        "searchTerms": [
-          {
-            "name": "noActivitySince",
-            "parameters": {
-              "days": 14
-            }
-          },
-          {
-            "name": "isOpen",
-            "parameters": {}
-          },
-          {
-            "name": "noLabel",
-            "parameters": {
-              "label": "no-recent-activity"
-            }
-          },
-          {
-            "name": "isPr",
-            "parameters": {}
-          },
-          {
-            "name": "isDraftPr",
-            "parameters": {
-              "value": "false"
-            }
-          }
-        ],
-        "actions": [
-          {
-            "name": "addReply",
-            "parameters": {
-              "comment": "Hi, @${issueAuthor}. Your PR has no update for 14 days and it is marked as stale PR. If no further update for over 14 days, the bot will close the PR.  If you want to refresh the PR, please remove `no-recent-activity` label. "
-            }
-          },
-          {
-            "name": "addLabel",
-            "parameters": {
-              "label": "no-recent-activity"
-            }
-          }
-        ],
-        "taskName": "Stale PR 14 days reminder and add stale label"
-      },
-      "disabled": false
-    },
-    {
-      "taskType": "scheduled",
-      "capabilityId": "ScheduledSearch",
-      "subCapability": "ScheduledSearch",
-      "version": "1.1",
-      "config": {
-        "frequency": [
-          {
-            "weekDay": 0,
-            "hours": [
-              13
-            ],
-            "timezoneOffset": 8
-          },
-          {
-            "weekDay": 1,
-            "hours": [
-              13
-            ],
-            "timezoneOffset": 8
-          },
-          {
-            "weekDay": 2,
-            "hours": [
-              13
-            ],
-            "timezoneOffset": 8
-          },
-          {
-            "weekDay": 3,
-            "hours": [
-              13
-            ],
-            "timezoneOffset": 8
-          },
-          {
-            "weekDay": 4,
-            "hours": [
-              13
-            ],
-            "timezoneOffset": 8
-          },
-          {
-            "weekDay": 5,
-            "hours": [
-              13
-            ],
-            "timezoneOffset": 8
-          },
-          {
-            "weekDay": 6,
-            "hours": [
-              13
-            ],
-            "timezoneOffset": 8
-          }
-        ],
-        "searchTerms": [
-          {
-            "name": "isOpen",
-            "parameters": {}
-          },
-          {
-            "name": "hasLabel",
-            "parameters": {
-              "label": "no-recent-activity"
-            }
-          },
-          {
-            "name": "noActivitySince",
-            "parameters": {
-              "days": 14
-            }
-          }
-        ],
-        "taskName": "Close stale PR (no update for 30 days)",
-        "actions": [
-          {
-            "name": "closeIssue",
-            "parameters": {}
-          },
-          {
-            "name": "addReply",
-            "parameters": {
-              "comment": "Hi, @${issueAuthor}. The PR will be closed since the PR has no update for 28 days.  If you still need the PR review to proceed, please reopen it and @ mention PR assignee."
-            }
-          }
-        ]
-      },
-      "disabled": false
-    },
     {
       "taskType": "trigger",
       "capabilityId": "IssueResponder",