Remove use of deprecated E_STRICT (zircote#1704)

Author: DerManoMann

Diff for: bin/openapi

@@ -154,7 +154,6 @@ $errorTypes = [
     E_WARNING => 'Warning',
     E_PARSE => 'Parser error',
     E_NOTICE => 'Notice',
-    E_STRICT => 'Strict',
     E_DEPRECATED => 'Deprecated',
     E_CORE_ERROR => 'Error(Core)',
     E_CORE_WARNING => 'Warning(Core)',