This is the line you will want to edit:
*:1080p60|1080p50|1080p24|1080p23|1080i60|1080i50|720p60|720p50|576p50|576i50|480p60|480i60
In this line simply remove the resolution/framerates your TV doesn't support. For example, let's say you have a US TV, then it will most likely (there are exceptions !) not support 50 hz. (Most european TV's support both the european 50 hz and the US 60 hz standard, not sure if that's an indication of arrogance of one of those continents ?

)
Also let's say your TV supports both 24h and 23.976 hz but only for 1080p (like my XBR9 does). In that case you'll end up with something like:
*:1080p60|1080p24|1080p23|1080i60|720p60|480p60|480i60