Move over to ABSL logging and flags.

Removes gperftools too since that wants gflags.

Here come the fireworks.

Change-Id: I79cb7bcf60f1047fbfa28bfffc21a0fd692e4b1c
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/frc971/vision/v4l2_reader.h b/frc971/vision/v4l2_reader.h
index 4906d8e..01634e2 100644
--- a/frc971/vision/v4l2_reader.h
+++ b/frc971/vision/v4l2_reader.h
@@ -4,8 +4,8 @@
 #include <array>
 #include <string>
 
+#include "absl/log/check.h"
 #include "absl/types/span.h"
-#include "glog/logging.h"
 
 #include "aos/containers/ring_buffer.h"
 #include "aos/events/epoll.h"