Do not treat a SQLTimeoutException as an evictable offense (#2238)

Submitters of #1308 and #1631 take note. HikariCP will no longer evict connections due to encountering ``SQLTimeoutException``. If you need to "restore" this behavior consult the pool properties ``exceptionOverride`` or ``exceptionOverrideClassName``.

src/main/java/com/zaxxer/hikari/pool/ProxyConnection.java

@@ -160,7 +160,6 @@ public abstract class ProxyConnection implements Connection
             break;
          }
          else if (sqlState != null && sqlState.startsWith("08")
-             || nse instanceof SQLTimeoutException
              || ERROR_STATES.contains(sqlState)
              || ERROR_CODES.contains(nse.getErrorCode())) {