Remove again PEGTL's test file "file_äöü𝄞_data.txt"

This file (utf8name) is problematic on some older filesystems

Remove again PEGTL's test file "file_äöü𝄞_data.txt"
53a39851 · Stéphane Del Pino · d71733b8 · d71733b8
Commit 53a39851 authored 3 years ago by Stéphane Del Pino
--- a/packages/PEGTL/src/test/pegtl/file_äöü𝄞_data.txt
+++ b/packages/PEGTL/src/test/pegtl/file_äöü𝄞_data.txt
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