switched from fitpc/atom to prime/linux

Also removed a few old things that had nothing reasonable to be changed
to.
diff --git a/frc971/control_loops/drivetrain/drivetrain.gyp b/frc971/control_loops/drivetrain/drivetrain.gyp
index 53bb16c..7821c39 100644
--- a/frc971/control_loops/drivetrain/drivetrain.gyp
+++ b/frc971/control_loops/drivetrain/drivetrain.gyp
@@ -77,7 +77,7 @@
         'drivetrain_main.cc',
       ],
       'dependencies': [
-        '<(AOS)/atom_code/atom_code.gyp:init',
+        '<(AOS)/linux_code/linux_code.gyp:init',
         'drivetrain_lib',
         'drivetrain_loop',
       ],
diff --git a/frc971/control_loops/drivetrain/drivetrain_main.cc b/frc971/control_loops/drivetrain/drivetrain_main.cc
index e3fc306..f3f0ddd 100644
--- a/frc971/control_loops/drivetrain/drivetrain_main.cc
+++ b/frc971/control_loops/drivetrain/drivetrain_main.cc
@@ -1,6 +1,6 @@
 #include "frc971/control_loops/drivetrain/drivetrain.h"
 
-#include "aos/atom_code/init.h"
+#include "aos/linux_code/init.h"
 
 int main() {
   ::aos::Init();