Switch 2018 trajectory plotter to in_process_plotter

Works a lot better

Change-Id: Ifbdf8eec211fd2278dedb7642433cacdc07e9d55
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/y2018/control_loops/superstructure/arm/BUILD b/y2018/control_loops/superstructure/arm/BUILD
index d05c245..f90cc92 100644
--- a/y2018/control_loops/superstructure/arm/BUILD
+++ b/y2018/control_loops/superstructure/arm/BUILD
@@ -82,7 +82,7 @@
         ":ekf",
         ":generated_graph",
         ":trajectory",
-        "//third_party/matplotlib-cpp",
+        "//frc971/analysis:in_process_plotter",
         "@com_github_gflags_gflags//:gflags",
         "@org_tuxfamily_eigen//:eigen",
     ],