stop using backtrace because we never used it and the informations it gives is poor

Author: Ivansete-status

apps/wakunode2/wakunode2.nim

@@ -5,7 +5,6 @@ import
   chronicles,
   chronos,
   metrics,
-  libbacktrace,
   system/ansi_c,
   libp2p/crypto/crypto
 import
@@ -88,7 +87,7 @@ when isMainModule:
     when defined(posix):
       proc handleSigsegv(signal: cint) {.noconv.} =
         # Require --debugger:native
-        fatal "Shutting down after receiving SIGSEGV", stacktrace = getBacktrace()
+        fatal "Shutting down after receiving SIGSEGV"
 
         # Not available in -d:release mode
         writeStackTrace()