Revert "no more xx imports in tools"

This reverts commit 1f9485171e.

tools/lib/framereader.py

@@ -25,6 +25,9 @@ from concurrent.futures import ThreadPoolExecutor, as_completed
 
 from tools.lib.cache import cache_path_for_file_path
 from tools.lib.exceptions import DataUnreadableError
+try:
+  from xx.chffr.lib.filereader import FileReader
+except ImportError:
   from tools.lib.filereader import FileReader
 from tools.lib.file_helpers import atomic_write_in_dir
 from tools.lib.mkvparse import mkvindex

tools/lib/logreader.py

@@ -11,6 +11,9 @@ import capnp
 import numpy as np
 
 from tools.lib.exceptions import DataUnreadableError
+try:
+  from xx.chffr.lib.filereader import FileReader
+except ImportError:
   from tools.lib.filereader import FileReader
 from cereal import log as capnp_log