Delete enhancement.yml

Redirect to Element Meta as we've been using that for a while now

.github/ISSUE_TEMPLATE/enhancement.yml

@@ -1,47 +0,0 @@
-name: Enhancement request
-description: Do you have a suggestion or feature request?
-labels: [T-Enhancement]
-body:
-  - type: markdown
-    attributes:
-      value: |
-        Thank you for taking the time to propose an enhancement to an existing feature. If you would like to propose a new feature or a major cross-platform change, please [start a discussion here](https://github.com/vector-im/element-meta/discussions/new?category=ideas).
-  - type: textarea
-    id: usecase
-    attributes:
-      label: Your use case
-      description: Please feel welcome to include screenshots or mock ups.
-      placeholder: Tell us what you would like to do!
-      value: |
-        #### What would you like to do?
-
-        #### Why would you like to do it?
-
-        #### How would you like to achieve it?
-    validations:
-      required: true
-  - type: textarea
-    id: alternative
-    attributes:
-      label: Have you considered any alternatives?
-      placeholder: A clear and concise description of any alternative solutions or features you've considered.
-    validations:
-      required: false
-  - type: textarea
-    id: additional-context
-    attributes:
-      label: Additional context
-      placeholder: Is there anything else you'd like to add?
-    validations:
-      required: false
-  - type: dropdown
-    id: pr
-    attributes:
-      label: Are you willing to provide a PR?
-      description:  |
-        Don't worry, it's still OK to answer 'No' :).
-      options:
-        - 'Yes'
-        - 'No'
-    validations:
-      required: true