Fix initial buffer data and removed unimplemented method

srsue/hdr/phy/nr/cell_search.h

@@ -49,8 +49,6 @@ public:
   bool  start(const cfg_t& cfg);
   ret_t run_slot(const cf_t* buffer, uint32_t slot_sz);
 
-  void reset();
-
 private:
   srslog::basic_logger&        logger;
   srsran_ssb_t                 ssb    = {};

srsue/src/phy/sync_sa.cc

@@ -215,6 +215,11 @@ void sync_sa::run_state_idle()
 
 void sync_sa::run_state_cell_search()
 {
+  // Initialise buffer
+  if (cell_search_nof_trials == 0) {
+    srsran_vec_cf_zero(rx_buffer, slot_sz);
+  }
+
   // Receive samples
   srsran::rf_buffer_t rf_buffer = {};
   rf_buffer.set_nof_samples(slot_sz);