Sqlite: Remove virtual interface dependency

With C++ 17 it is possible to deduce the template argument from the
contructor parameter(CTAD). We then do not call anymore a virtual
function but a normal function.

Change-Id: I61c3ce22322c66b256afab278e768014401b08cc
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>

tests/unit/unittest/sqlitealgorithms-test.cpp

@@ -115,7 +115,7 @@ public:
 
 protected:
     Sqlite::Database database{":memory:", Sqlite::JournalMode::Memory};
-    Sqlite::ImmediateTransaction transaction{database};
+    Sqlite::ImmediateTransaction<Sqlite::Database> transaction{database};
     Initializer initializer{database};
     Sqlite::ReadStatement<2> selectViewsStatement{"SELECT key, value FROM data ORDER BY key",
                                                   database};