Transceiver52M: Remove and rename oversampling variables

The transceiver only uses a single integer oversampling value,
which is more simply referred to as samples-per-symbol.

mRadioOversampling --> mSPS
mTransceiverOversampling (removed)

Signed-off-by: Thomas Tsou <tom@tsou.cc>
diff --git a/Transceiver52M/radioInterface.cpp b/Transceiver52M/radioInterface.cpp
index 65d5738..8ad72b0 100644
--- a/Transceiver52M/radioInterface.cpp
+++ b/Transceiver52M/radioInterface.cpp
@@ -29,12 +29,11 @@
 
 RadioInterface::RadioInterface(RadioDevice *wRadio,
 			       int wReceiveOffset,
-			       int wRadioOversampling,
-			       int wTransceiverOversampling,
+			       int wSPS,
 			       GSM::Time wStartTime)
   : underrun(false), sendCursor(0), rcvCursor(0), mOn(false),
     mRadio(wRadio), receiveOffset(wReceiveOffset),
-    samplesPerSymbol(wRadioOversampling), powerScaling(1.0),
+    samplesPerSymbol(wSPS), powerScaling(1.0),
     loadTest(false)
 {
   mClock.set(wStartTime);