remove unnecessary steps of master CI pipeline

ci/.azure-pipelines.master.yml

@@ -11,18 +11,6 @@ steps:
 
 - script: |
     cp ~/dbt-ci/.env .
-
-    # Check if it matches the refs/pull/<PR_ID>/merge pattern
-    if [[ $BUILD_SOURCEBRANCH =~ ^refs/pull/([0-9]+)/merge$ ]]; then
-        POSTGRES_DATABASE="ci_pr_${BASH_REMATCH[1]}"
-    else
-        POSTGRES_DATABASE="ci_${BUILD_SOURCEBRANCH#refs/heads/}"
-    fi
-
-    echo "POSTGRES_DATABASE: $POSTGRES_DATABASE"
-
-    echo "POSTGRES_DATABASE=${POSTGRES_DATABASE}" >> .env
-    set -a && source .env && set +a
   displayName: 'Load env'
 
 - script: |
@@ -31,12 +19,6 @@ steps:
     psql -h $POSTGRES_HOST -U $POSTGRES_USER -d postgres -c "SELECT 1 FROM pg_database WHERE datname = 'postgres';"
   displayName: 'Smoke test Postgres connection'
 
-- script: |
-    set -a && source .env && set +a
-
-    psql -h $POSTGRES_HOST -U $POSTGRES_USER -d postgres -c "CREATE DATABASE ${POSTGRES_DATABASE}"
-  displayName: 'Create branch dedicated database'
-
 - script: |
     python3 -m venv venv
     source venv/bin/activate
@@ -74,10 +56,4 @@ steps:
 
   displayName: 'Validate models compiled SQL'
 
-- script: |
-    set -a && source .env && set +a
-
-    psql -h $POSTGRES_HOST -U $POSTGRES_USER -d postgres -c "DROP DATABASE ${POSTGRES_DATABASE}"
-  condition: always()
-  displayName: 'Delete branch dedicated database'