[wpilib] Remove LiveWindow (#7733)

This will be replaced by a different mechanism, but removing it eases
the initial implementation burden of a new Telemetry/Sendable framework.

wpilibc/src/main/native/cpp/AnalogAccelerometer.cpp

@@ -56,6 +56,6 @@ void AnalogAccelerometer::InitAccelerometer() {
   HAL_Report(HALUsageReporting::kResourceType_Accelerometer,
              m_analogInput->GetChannel() + 1);
 
-  wpi::SendableRegistry::AddLW(this, "Accelerometer",
-                               m_analogInput->GetChannel());
+  wpi::SendableRegistry::Add(this, "Accelerometer",
+                             m_analogInput->GetChannel());
 }