usrp1: Remove uninitialized skipRx logic

There appears to have been some logic to operate a USRP1 in
transmit-only GSM mode.  This is achieved using the skipRx member
of the transceiver object.  However, there's nobody that ever
initializes it properly, and hence the feature is not possible to
use anyway.

I don't think this has any valid use case, so let's remove it.

Change-Id: I616193f1e9aaefbf4ceb26761657811093f28b6f
diff --git a/Transceiver52M/device/usrp1/USRPDevice.cpp b/Transceiver52M/device/usrp1/USRPDevice.cpp
index 5d19514..a8f1638 100644
--- a/Transceiver52M/device/usrp1/USRPDevice.cpp
+++ b/Transceiver52M/device/usrp1/USRPDevice.cpp
@@ -100,7 +100,6 @@
   string rbf = "std_inband.rbf";
   //string rbf = "inband_1rxhb_1tx.rbf";
   m_uRx.reset();
-  if (!skipRx) {
   try {
     m_uRx = usrp_standard_rx_sptr(usrp_standard_rx::make(
                                         0, decimRate * tx_sps, 1, -1,
@@ -122,7 +121,6 @@
     m_uRx.reset();
     return -1;
   }
-  }
 
   try {
     m_uTx = usrp_standard_tx_sptr(usrp_standard_tx::make(
@@ -145,7 +143,7 @@
     return -1;
   }
 
-  if (!skipRx) m_uRx->stop();
+  m_uRx->stop();
   m_uTx->stop();
 
 #endif
@@ -188,10 +186,10 @@
 {
   LOGC(DDEV, INFO) << "starting USRP...";
 #ifndef SWLOOPBACK
-  if (!m_uRx && !skipRx) return false;
+  if (!m_uRx) return false;
   if (!m_uTx) return false;
 
-  if (!skipRx) m_uRx->stop();
+  m_uRx->stop();
   m_uTx->stop();
 
   writeLock.lock();
@@ -221,10 +219,7 @@
   isAligned = false;
 
 
-  if (!skipRx)
   started = (m_uRx->start() && m_uTx->start());
-  else
-  started = m_uTx->start();
   return started;
 #else
   gettimeofday(&lastReadTime,NULL);