Remove issue templates

.gitlab/issue_templates/Access Request.md

.gitlab/issue_templates/Application - Archive.md

.gitlab/issue_templates/Application - Initial.md

.gitlab/issue_templates/Application - Update.md

.gitlab/issue_templates/Bug.md

.gitlab/issue_templates/Feature Request.md

.gitlab/issue_templates/Leadership Question.md

.gitlab/issue_templates/New Findings.md

.gitlab/issue_templates/Onboarding Question.md

.gitlab/issue_templates/Pipeline Failure.md