chore: Remove Request Source Issue Template

[skip ci]

.github/ISSUE_TEMPLATE/request_source.yml

@@ -1,56 +0,0 @@
-name: Request Plugin
-description: Request a new plugin for LNReader
-labels: [Plugin Request]
-body:
-  - type: input
-    id: name
-    attributes:
-      label: Plugin Name
-      description: The name of the website or platform.
-      placeholder: |
-        Example: "Novel Updates"
-    validations:
-      required: true
-
-  - type: input
-    id: link
-    attributes:
-      label: Website URL
-      description: The URL of the website.
-      placeholder: |
-        Example: "https://example.com"
-    validations:
-      required: true
-
-  - type: input
-    id: language
-    attributes:
-      label: Language
-      description: The primary language of the website.
-      placeholder: |
-        Example: "English"
-    validations:
-      required: true
-
-  - type: textarea
-    id: other-details
-    attributes:
-      label: Other Details
-      description: Any additional information about the website.
-      placeholder: |
-        Why this plugin would be useful, special features, etc.
-
-  - type: checkboxes
-    id: acknowledgements
-    attributes:
-      label: Acknowledgements
-      description: Your issue will be closed if these requirements are not met.
-      options:
-        - label: I have searched existing issues and confirmed this plugin has not been requested before.
-          required: true
-        - label: I have used the plugin name as the issue title.
-          required: true
-        - label: I have verified this plugin does not already exist in the [repository](https://github.com/LNReader/lnreader-plugins).
-          required: true
-        - label: I have provided all requested information in this form.
-          required: true