Remove expectation requiring no non-debug custom sections in separate-dwarf files

This test is now failing after WebAssembly/binaryen#7043
because the target_features section is in the output binary and gets copied
over to the separate-dwarf file (this is because the separate-dwarf file is
just a copy of the original file).

An alternative to this would be to strip all non-debug custom sections
from the side file, although there could be sections that emscripten
doesn't know about that it would be desirable to have.

Author: dschuff

test/test_other.py

@@ -10226,8 +10226,6 @@ def test_separate_dwarf(self):
         # with name sections but no code sections.
         # if sec.type == webassembly.SecType.CODE:
         #   self.fail(f'section of type "{sec.type}" found in separate dwarf file')
-        if sec.name and sec.name != 'name' and not sec.name.startswith('.debug'):
-          self.fail(f'non-debug section "{sec.name}" found in separate dwarf file')
 
     # Check that dwarfdump can dump the debug info
     dwdump = self.run_process(