chore(issues): remove issues templates to use org-level templates [skip ci]

* Automated using https://github.com/myii/ssf-formula/pull/61

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,68 +0,0 @@
----
-name: Bug report
-about: Create a report to help us improve
-title: '[BUG] '
-labels: 'bug'
-assignees: ''
-
----
-
-<!--
-Notes:
-1. Only post _bug reports_ here.
-2. Use the appropriate template for _feature requests_.
-3. Please direct questions to the [`#formulas` channel on Slack](https://saltstackcommunity.slack.com/messages/C7LG8SV54/), which is bridged to `#saltstack-formulas` on Freenode.
--->
-
-## Your setup
-### Formula commit hash / release tag
-<!-- Please specify the formula's commit hash and/or release tag that you are using. -->
-
-
-
-### Versions reports (master & minion)
-<!-- Provided by running `salt --versions-report`. Please also mention any differences in master/minion versions. -->
-
-
-
-### Pillar / config used
-<!-- Provide links to the SLS files and/or relevant configs (be sure to remove sensitive info). -->
-
-
-
----
-
-## Bug details
-### Describe the bug
-<!-- A clear and concise description of what the bug is. -->
-
-
-
-### Steps to reproduce the bug
-<!-- Include debug logs if possible and relevant, e.g. using `salt-minion -l debug`. -->
-<!-- Alternatively, linking to Kitchen debug logs is useful, e.g. via. Travis CI. -->
-<!-- Most useful is providing a failing InSpec test, which can be used to verify any proposed fix. -->
-
-
-
-### Expected behaviour
-<!-- A clear and concise description of what you expected to happen. -->
-
-
-
-### Attempts to fix the bug
-<!-- Please mention any attempts you have made to fix the bug and what the results were. -->
-
-
-
-### Additional context
-<!-- Add any other context about the problem here. -->
-
-
-
----
-
-### Meta: How can this template be improved?
-<!-- Feel free to suggest how this template can be improved. -->
-
-

.github/ISSUE_TEMPLATE/feature_request.md

@@ -1,42 +0,0 @@
----
-name: Feature request
-about: Suggest an idea for this project
-title: '[FEATURE] '
-labels: 'enhancement'
-assignees: ''
-
----
-
-<!--
-Notes:
-1. Only post _feature requests_ here.
-2. Use the appropriate template for _bug reports_.
-3. Please direct questions to the [`#formulas` channel on Slack](https://saltstackcommunity.slack.com/messages/C7LG8SV54/), which is bridged to `#saltstack-formulas` on Freenode.
--->
-
-### Is your feature request related to a problem?
-<!-- A clear and concise description of what the problem is. -->
-
-
-
-### Describe the solution you'd like
-<!-- A clear and concise description of what you want to happen. -->
-
-
-
-### Describe alternatives you've considered
-<!-- Describe any alternative solutions or features you've considered. -->
-
-
-
-### Additional context
-<!-- Add any other context about the feature request here. -->
-
-
-
----
-
-### Meta: How can this template be improved?
-<!-- Feel free to suggest how this template can be improved. -->
-
-