proc_sr: remove info log when starting SR proc

this was a very noisy log that was printed in pretty much
every TTI because the BSR procedure starts a SR whenever
it needs to send a regular BSR. The SR is canceled when a UL
grant arrives but the log line stays there.

Since we are printing a log when we actually signal a SR
to the PHY, this line is not needed.

srsue/src/stack/mac/proc_sr.cc

@@ -74,6 +74,9 @@ void sr_proc::set_config(srslte::sr_cfg_t& cfg)
     Error("Zero is an invalid value for dsr-TransMax (n4, n8, n16, n32, n64 are supported). Disabling SR.\n");
     return;
   }
+  if (cfg.enabled) {
+    Info("SR:    Set dsr_transmax=%d\n", sr_cfg.dsr_transmax);
+  }
   sr_cfg = cfg;
 }
 
@@ -115,9 +118,6 @@ void sr_proc::start()
       sr_counter    = 0;
       is_pending_sr = true;
     }
-    if (sr_cfg.enabled) {
-      Info("SR:    Starting Procedure. dsrTransMax=%d\n", sr_cfg.dsr_transmax);
-    }
   }
 }