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/y2016/BUILD b/y2016/BUILD
index 849f0f6..9c27142 100644
--- a/y2016/BUILD
+++ b/y2016/BUILD
@@ -18,8 +18,9 @@
         "//frc971:shifter_hall_effect",
         "//frc971/control_loops:state_feedback_loop",
         "//y2016/control_loops/drivetrain:polydrivetrain_plants",
-        "@com_github_google_glog//:glog",
         "@com_google_absl//absl/base",
+        "@com_google_absl//absl/log",
+        "@com_google_absl//absl/log:check",
     ],
 )