remove commented code

src/backends/oracle/blob.cpp

@@ -161,40 +161,6 @@ void oracle_blob_backend::set_lob_locator(oracle_blob_backend::locator_t locator
     }
 
     initialized_ = initialized;
-    /*
-     * see https://docs.oracle.com/cd/A91202_01/901_doc/appdev.901/a89857/oci07lob.htm#436746 
-     * The explicitly open/closing LOB technique is dangerous, as it can lead to errors.
-     * The LOB opening and closing mechanism has the following restrictions:
-
-        An application must close all previously opened LOBs before committing a transaction. Failing to do so will result in an error.
-        If a transaction is rolled back, all open LOBs are discarded along with the changes made (the LOBs are not closed), so associated triggers are not fired.
-        It is an error to open or close the same internal LOB twice within the same transaction, either with different locators or the same locator.
-        It is an error to close a LOB that has not been opened.
-
-
-     * TODO: This method should be used explicitly by the user
-     * 
-    if (initialized)
-    {
-        boolean already_open = FALSE;
-        sword res = OCILobIsOpen(session_.svchp_, session_.errhp_, lobp_, &already_open);
-
-        if (res != OCI_SUCCESS)
-        {
-            throw_oracle_soci_error(res, session_.errhp_);
-        }
-
-        if (!already_open)
-        {
-            res = OCILobOpen(session_.svchp_, session_.errhp_, lobp_, OCI_LOB_READWRITE);
-
-            if (res != OCI_SUCCESS)
-            {
-                throw_oracle_soci_error(res, session_.errhp_);
-            }
-        }
-    }
-    */
 }
 
 void oracle_blob_backend::reset()