Remove Cores CI scripts so we dont accidentally run their actions

.github/workflows/msbuild48.yml

@@ -1,57 +0,0 @@
-name: .msbuild48
-
-on:
-  push:
-    branches: [ "master" ]
-    paths:
-      - '**.cs'
-  workflow_dispatch:
-
-jobs:
-  build:
-    if: github.repository == 'opensim/opensim'
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v3
-    - name: shortsha
-      id: vars
-      run: echo "::set-output name=sha_short::$(git rev-parse --short HEAD)"   
-    - name: preBuild
-      run: bash ${GITHUB_WORKSPACE}/runprebuild48.sh
-
-    - name: Build
-      id: build
-      run: msbuild /p:Configuration=Release OpenSim.sln
-
-    - name: release
-      if: success()
-      run: zip -r LastBuild.zip bin ThirdPartyLicenses README.md CONTRIBUTORS.txt LICENSE.txt 
-    - uses: softprops/action-gh-release@v1
-      if: success()
-      with:
-          tag_name: r${{ steps.vars.outputs.sha_short }}
-          name: LastAutoBuild
-          files: LastBuild.zip
-
-    - name: report push to irc
-      if: github.event_name == 'push'
-      uses: rectalogic/notify-irc@v1
-      with:
-        channel: "#opensim-dev"
-        server: "irc.libera.chat"
-        nickname: osgithub
-        message: |
-          ${{ github.actor }} pushed to ${{ github.repository }}
-          ${{ join(github.event.commits.*.message, '\n') }}
-          mono framework4.8 compile: ${{ steps.build.conclusion }}
-
-    - name: manual report to irc
-      if: github.event_name == 'workflow_dispatch'
-      uses: rectalogic/notify-irc@v1
-      with:
-        channel: "#opensim-dev"
-        server: "irc.libera.chat"
-        nickname: osgithub
-        message: |
-          ${{ github.repository }}
-          mono framework4.8 compile: ${{ steps.build.conclusion }}

.github/workflows/msbuildnet6.yml

@@ -1,63 +0,0 @@
-name: .msbuildnet6
-
-on:
-  push:
-    branches: [ "dotnet6" ]
-    paths:
-      - '**.cs'
-  workflow_dispatch:
-
-jobs:
-  build:
-
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v3
-      with:
-       ref: dotnet6
-    - name: shortsha
-      id: vars
-      run: echo "::set-output name=sha_short::$(git rev-parse --short HEAD)"   
-    - name: preBuild
-      run: bash ${GITHUB_WORKSPACE}/runprebuild.sh
-
-    - name: Setup dotnet
-      uses: actions/setup-dotnet@v3
-      with:
-        dotnet-version: '6.0.x'
-    - name: Build
-      id: build
-      run: dotnet build --configuration Release OpenSim.sln
-
-    - name: release
-      if: success()
-      run: zip -r LastDotNetBuild.zip bin ThirdPartyLicenses README.md CONTRIBUTORS.txt LICENSE.txt 
-    - uses: softprops/action-gh-release@v1
-      if: success()
-      with:
-          tag_name: r${{ steps.vars.outputs.sha_short }}
-          name: LastDotNetAutoBuild
-          files: LastDotNetBuild.zip
-
-    - name: report push to irc
-      if: github.event_name == 'push'
-      uses: rectalogic/notify-irc@v1
-      with:
-        channel: "#opensim-dev"
-        server: "irc.libera.chat"
-        nickname: osgithub
-        message: |
-          ${{ github.actor }} pushed to ${{ github.repository }}
-          ${{ join(github.event.commits.*.message, '\n') }}
-          dotnet compile: ${{ steps.build.conclusion }}
-
-    - name: manual report to irc
-      if: github.event_name == 'workflow_dispatch'
-      uses: rectalogic/notify-irc@v1
-      with:
-        channel: "#opensim-dev"
-        server: "irc.libera.chat"
-        nickname: osgithub
-        message: |
-          ${{ github.repository }}
-          dotnet compile: ${{ steps.build.conclusion }}