Removed support for dual analog hall effect sensors for shifters

Change-Id: Ie521511f5181140de44c35385aac0b01b5116c06
diff --git a/y2015/constants.cc b/y2015/constants.cc
index ce78344..0ce6ef1 100644
--- a/y2015/constants.cc
+++ b/y2015/constants.cc
@@ -37,14 +37,14 @@
 const double kHighGearRatio = kLowGearRatio;
 
 const ::frc971::constants::ShifterHallEffect kCompRightDriveShifter{
-    555, 657, 660, 560, 0.2, 0.7};
+    0.0, 0.0, 0.2, 0.7};
 const ::frc971::constants::ShifterHallEffect kCompLeftDriveShifter{
-    555, 660, 644, 552, 0.2, 0.7};
+    0.0, 0.0, 0.2, 0.7};
 
 const ::frc971::constants::ShifterHallEffect kPracticeRightDriveShifter{
-    2.95, 3.95, 3.95, 2.95, 0.2, 0.7};
+    0.0, 0.0, 0.2, 0.7};
 const ::frc971::constants::ShifterHallEffect kPracticeLeftDriveShifter{
-    2.95, 4.2, 3.95, 3.0, 0.2, 0.7};
+    0.0, 0.0, 0.2, 0.7};
 const double kToteHeight = 0.3;
 
 // Set by Daniel on 2/13/15.
diff --git a/y2015/control_loops/drivetrain/drivetrain_base.cc b/y2015/control_loops/drivetrain/drivetrain_base.cc
index 26a283b..30e25f8 100644
--- a/y2015/control_loops/drivetrain/drivetrain_base.cc
+++ b/y2015/control_loops/drivetrain/drivetrain_base.cc
@@ -15,7 +15,7 @@
 
 using ::frc971::constants::ShifterHallEffect;
 
-const ShifterHallEffect kThreeStateDriveShifter{0.0, 0.0, 0.0, 0.0, 0.25, 0.75};
+const ShifterHallEffect kThreeStateDriveShifter{0.0, 0.0, 0.25, 0.75};
 
 const DrivetrainConfig &GetDrivetrainConfig() {
   static DrivetrainConfig kDrivetrainConfig{