removed a not convenient assert

src/snapshot.cpp

@@ -37,7 +37,7 @@ void Snapshot::computeRanges(const Azels& azel,
                              const Eigen::Vector3d& latlonalt,
                              const Options& opt)
 {
-    assert(!rangesComputed() && "pseudo ranges already computed!");
+    //assert(!rangesComputed() && "pseudo ranges already computed!");
 
     ranges_ = Range::computeRanges(obs_, nav_, sats_, azel, latlonalt, opt);
 }