Remove feature request in Issue template

.github/ISSUE_TEMPLATE/bugreport.yaml

@@ -18,7 +18,7 @@ body:
     attributes:
       label: Open5GS Release, Revision, or Tag
       description: Please check if your issue has been resolved in the latest release.
-      placeholder: v2.6.0
+      placeholder: v2.7.1
     validations:
       required: true
   - type: textarea

.github/ISSUE_TEMPLATE/feature_request.yaml

@@ -1,48 +0,0 @@
-name: Feature request
-description: Propose an enhancement to Open5GS
-labels: ['Enhancement', 'triage']
-body:
-  - type: markdown
-    attributes:
-      value: >
-        ## Feature request
-        Please submit your feature request using the form. If your proposal is not sufficiently
-        well formed, we may request further clarification and expansion. If you're unsure about
-        how to formulate your request, please start a [discussion instead](https://github.com/open5gs/open5gs/dicsussions/).
-
-  - type: input
-    attributes:
-      label: Open5GS Release, Revision, or Tag
-      placeholder: v2.6.0
-    validations:
-      required: true
-
-  - type: input
-    attributes:
-      label: Components and subsystems
-      description: Which subsystems and components would this feature be relevant to?
-    validations:
-      required: true
-
-  - type: textarea
-    attributes:
-      label: Proposed functionality
-      description: >
-        Provide a detailed description of the feature or behaviour you are proposing. Please include any
-        Please include any relevant 3GPP standards and references and include any specific changes to
-        current protocols, processing pipelines, DIAMETER requests/responses, and interfaces. The more detail
-        you provide, the greater the chance your proposal has of being discussed.
-
-        If your feature request does not include anything actionable or sufficient details, you may be asked
-        to provide further clarification or your request may be rejected.
-    validations:
-      required: true
-
-  - type: textarea
-    attributes:
-      label: External dependencies
-      description: >
-        Please detail any new dependencies or implementations that this feature might introduce. e.g. Does the 
-        proposal require the installation of additional packages? Are there further external nodes which may be
-        required for integration testing? (Not all feature requests will introduce new dependencies)
-