clean up env

Author: Sylvestre Gug

.env.test

@@ -1,4 +1,3 @@
 NODE_ENV=test
 MYSQL_TEST_CREDENTIALS={"user":"root","host":"mysql","port":3306,"database":"mysql","ssl":"disabled"}
-MSSQL_CREDENTIALS:Server=mssql,1433;Database=master;User Id=sa;Password=Pass@word;trustServerCertificate=true;
-MSSQL_CREDENTIALS_READ_ONLY:Server=mssql,1433;Database=master;User Id=reader;Password=re@derP@ssw0rd;trustServerCertificate=true;
+MSSQL_CREDENTIALS:Server=mssql,1433;Database=master;User Id=sa;Password=Pass@word;trustServerCertificate=true;