Remove completed Task 8 from docs

Docs/tasks.md

@@ -1,26 +1,3 @@
-## Task 8: Fix `Robot.Ui.Settings Modal.Disable Scheduler`
-
-**Test File:** `tests/robot/ui/settings_modal.robot`
-
-**Error:**
-```
-TimeoutError: locator.check: Timeout 10000ms exceeded.
-```
-
-**Root Cause:**
-Similar to Task 7 - checkbox interaction is failing.
-
-**Fix Instructions:**
-Same as Task 7. The xpath `//label[contains(., 'Enable Scheduler')]` might not be correct or clicking the label isn't triggering the checkbox properly.
-
-Try:
-```robot
-Click    //label[contains(., 'Enable Scheduler')]    force=True
-```
-Or find the actual checkbox ID and use `Uncheck Checkbox` directly.
-
----
-
 ## Task 9: Fix `Robot.Ui.Settings Modal.Edit Backup Settings`
 
 **Test File:** `tests/robot/ui/settings_modal.robot`