transceiver: Fix 4 SPS receive TOA value

The time-of-arrival (TOA) value out of sigProc is specified
in symbols or, equivalently, 1 sample per symbol and does
not need to be normalized.

Signed-off-by: Tom Tsou <tom.tsou@ettus.com>

Transceiver52M/Transceiver.cpp

@@ -694,7 +694,7 @@ SoftVector *Transceiver::pullRadioVector(GSM::Time &wTime, double &RSSI, bool &i
     return NULL;
   }
 
-  timingOffset = toa / mSPSRx;
+  timingOffset = toa;
 
   bits = demodulate(*burst, amp, toa, type);