Revert "Debug-friendly line info in vTables referring to itf files"

This reverts commit 6a105448650b5ed9529c3cb88a5d57e9260e148a.
Revert "Fixing tests according to the new #line info"

This reverts commit b936f01d8019dbb4bad2fa93084c9a9fcdd5b117.
Revert "Fixing wrapper: used to be broken because of our new #line info"

This reverts commit 921860c7a5f4ff3b1ee32159f4ab6d3d220b56e8.