tidb: Remove description about "Control+C" for `compactible-kill-quer…

…y` (#18407) (#18413)

tidb-configuration-file.md

@@ -91,7 +91,7 @@ The TiDB configuration file supports more options than command-line parameters.
 + When [`enable-global-kill`](#enable-global-kill-new-in-v610) is `false`, `compatible-kill-query` controls whether you need to append the `TIDB` keyword when killing a query.
     - When `compatible-kill-query` is `false`, the behavior of `KILL xxx` in TiDB is different from that in MySQL. To kill a query in TiDB, you need to append the `TIDB` keyword, such as `KILL TIDB xxx`.
     - When `compatible-kill-query` is `true`, to kill a query in TiDB, there is no need to append the `TIDB` keyword. It is **STRONGLY NOT RECOMMENDED** to set `compatible-kill-query` to `true` in your configuration file UNLESS you are certain that clients will be always connected to the same TiDB instance. This is because pressing <kbd>Control</kbd>+<kbd>C</kbd> in the default MySQL client opens a new connection in which `KILL` is executed. If there is a proxy between the client and the TiDB cluster, the new connection might be routed to a different TiDB instance, which possibly kills a different session by mistake.
-+ When [`enable-global-kill`](#enable-global-kill-new-in-v610) is `true`, `KILL xxx` and `KILL TIDB xxx` have the same effect, but using <kbd>Control</kbd>+<kbd>C</kbd> to kill a query is not supported.
++ When [`enable-global-kill`](#enable-global-kill-new-in-v610) is `true`, `KILL xxx` and `KILL TIDB xxx` have the same effect.
 + For more information about the `KILL` statement, see [KILL [TIDB]](/sql-statements/sql-statement-kill.md).
 
 ### `check-mb4-value-in-utf8`