I have a range of text that I would like to delete from 50+ files.
The text starts on line 10 and ends on line 57.

In each of those files, I want to delete that range. Please note:

• Although the opening is unique, the closing is not (there are LOTS of quadruple closing brackets in this file).
• Rather than figure out some workaround about searching for a string of info (that occasionally changes: sometimes there is an extra space in there after a number or bracket), I would rather just delete the range of lines.

Is this possible?
If not, I am open to other suggestions. But please be mindful – the closing range is not unique.

Sample of the text (copied from Notepad++)

actor hip:1
{
channels
{
rotateY yrot
{
keys
{
k 0 -110
}
}
rotateZ zrot
{
keys
{
k 0 -0
}
}
rotateX xrot
{
keys
{
k 0 -5
}
}
translateX xtran
{
keys
{
k 0 0
}
}
translateY ytran
{
keys
{
k 0 -0.00400003
}
}
translateZ ztran
{
keys
{
k 0 0
}
}
}
}