Revert "There's no reason for these defaults in one constructor but not the other"

The reason is that dbaccess_unoapi dbaccess.ORowSet fails with:

lib.StatusException: couldn't set up test environment
    at mod._dbaccess.ORowSet.createTestEnvironment(ORowSet.java:479)

This reverts commit 36caac0e.

dbaccess/source/core/dataaccess/ModelImpl.cxx

@@ -427,7 +427,11 @@ ODatabaseModelImpl::ODatabaseModelImpl( const Reference< XMultiServiceFactory >&
             ,m_pSharedConnectionManager(NULL)
             ,m_nControllerLockCount(0)
 {
+    // some kind of default
     DBG_CTOR(ODatabaseModelImpl,NULL);
+    m_sConnectURL = "jdbc:";
+    m_aTableFilter.realloc(1);
+    m_aTableFilter[0] = "%";
     impl_construct_nothrow();
 }