Remove github action workflows

Signed-off-by: Mark Vieira <portugee@gmail.com>

.github/workflows/issue_project_assigner.yml

@@ -1,22 +0,0 @@
-on:
-  issues:
-    types: [labeled, unlabeled]
-
-jobs:
-  assign_to_project:
-    runs-on: ubuntu-latest
-    name: Assign an issue to project based on label
-    steps:
-      - name: Assign to project
-        uses: elastic/github-actions/project-assigner@v1.0.3
-        id: project_assigner
-        with:
-          issue-mappings: |
-            [
-              {
-                "label": ":Core/Infra/Build",
-                "projectName": "Elasticsearch Build Engineering",
-                "columnId": 8061652
-              }
-            ]
-          ghToken: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/pr_project_assigner.yml

@@ -1,22 +0,0 @@
-on:
-  pull_request:
-    types: [labeled, unlabeled]
-
-jobs:
-  assign_to_project:
-    runs-on: ubuntu-latest
-    name: Assign an issue to project based on label
-    steps:
-      - name: Assign to project
-        uses: elastic/github-actions/project-assigner@v1.0.3
-        id: project_assigner
-        with:
-          issue-mappings: |
-            [
-              {
-                "label": ":Core/Infra/Build",
-                "projectName": "Elasticsearch Build Engineering",
-                "columnId": 6493832
-              }
-            ]
-          ghToken: ${{ secrets.GITHUB_TOKEN }}