cputest: Make sure generated files pass syntax-check

The tests/cputestdata/cpu-parse.sh would produce JSON files with QEMU
replies which wouldn't pass syntax-check. Let's fix this by not emitting
an extra new line after reformatting the JSON file.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>

tests/cputestdata/cpu-reformat.py

@@ -6,4 +6,4 @@ import json
 dec = json.JSONDecoder()
 data, pos = dec.raw_decode(sys.stdin.read())
 json.dump(data, sys.stdout, indent=2, separators=(',', ': '))
-print("\n")
+print("")