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/y2020/vision/sift/fast_gaussian.h b/y2020/vision/sift/fast_gaussian.h
index d9a5f07..4e246e9 100644
--- a/y2020/vision/sift/fast_gaussian.h
+++ b/y2020/vision/sift/fast_gaussian.h
@@ -3,7 +3,8 @@
 
 #include <type_traits>
 
-#include "glog/logging.h"
+#include "absl/log/check.h"
+#include "absl/log/log.h"
 #include <opencv2/core/mat.hpp>
 
 #include "HalideBuffer.h"