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/solvers/convex.h b/frc971/solvers/convex.h
index d8989d8..4a7575d 100644
--- a/frc971/solvers/convex.h
+++ b/frc971/solvers/convex.h
@@ -6,8 +6,9 @@
 
 #include <iomanip>
 
+#include "absl/log/check.h"
+#include "absl/log/log.h"
 #include "absl/strings/str_join.h"
-#include "glog/logging.h"
 #include <Eigen/Dense>
 
 namespace frc971::solvers {