Removed oracle xe 18.4 docker service container

Author: aosingh

.github/workflows/oracle-xe-adapter-tests.yml

@@ -63,65 +63,4 @@ jobs:
           DBT_ORACLE_PROTOCOL: tcp
           LD_LIBRARY_PATH: /opt/oracle/instantclient_21_6
           TNS_ADMIN: /opt/tns_admin
-
-  oracle_xe_18_4:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: true
-      matrix:
-        os: [ ubuntu-latest ]
-        python-version: [ '3.7', '3.8', '3.9', '3.10' ]
-
-    services:
-      oracle_db_xe:
-        image: container-registry.oracle.com/database/express:18.4.0-xe
-        env:
-          ORACLE_PWD: ${{ secrets.DBT_ORACLE_PASSWORD }}
-        options: --name oracle_db_xe
-        ports:
-          - 1521:1521
-
-    steps:
-      - name: Check out dbt-oracle repository code
-        uses: actions/checkout@v3
-
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v3
-        with:
-          python-version: ${{ matrix.python-version }}
-
-      - name: Install Oracle Instantclient
-        run: |
-          chmod +x ${{ github.workspace }}/.github/scripts/install_oracle_instantclient.sh
-          ${{ github.workspace }}/.github/scripts/install_oracle_instantclient.sh
-
-      - name: Copy Create User script
-        run: |
-          chmod +x ${{ github.workspace }}/.github/scripts/create_new_user.sh
-          docker cp ${{ github.workspace }}/.github/scripts/create_new_user.sh oracle_db_xe:/home/oracle/create_new_user.sh
-
-      - name: Create dbt test user
-        run: |
-          docker exec oracle_db_xe /home/oracle/create_new_user.sh dbt_test ${{ secrets.DBT_ORACLE_PASSWORD }}
-
-      - name: Install dbt-oracle with core dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install pytest dbt-tests-adapter==1.1.1
-          pip install -r requirements.txt
-          pip install -e .
-
-      - name: Run adapter tests
-        run: |
-          pytest
-        env:
-          DBT_ORACLE_USER: DBT_TEST
-          DBT_ORACLE_HOST: localhost
-          DBT_ORACLE_PORT: 1521
-          DBT_ORACLE_SCHEMA: DBT_TEST
-          DBT_ORACLE_PASSWORD: ${{ secrets.DBT_ORACLE_PASSWORD }}
-          DBT_ORACLE_DATABASE: XEPDB1
-          DBT_ORACLE_SERVICE: XEPDB1
-          DBT_ORACLE_PROTOCOL: tcp
-          LD_LIBRARY_PATH: /opt/oracle/instantclient_21_6
-          TNS_ADMIN: /opt/tns_admin
+