CRM-19715 (IIDA-96), removed opening_balance and current_period_opening_balance field from civicrm_financial_account table and code
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* CRM-19715:
https://issues.civicrm.org/jira/browse/CRM-19715
CRM-19715, added DAO changes
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* CRM-19715: Remove Close Accounting Period code
https://issues.civicrm.org/jira/browse/CRM-19715
CRM-19715, removed upgrade code to drop fields from civicrm_financial_account table
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* CRM-19715: Remove Close Accounting Period code
https://issues.civicrm.org/jira/browse/CRM-19715