add message about http json-rpc deprecation

remix-lib/src/execution/execution-context.js

@@ -115,7 +115,7 @@ function ExecutionContext () {
   this.blockGasLimit = this.blockGasLimitDefault
   this.customNetWorks = {}
   this.blocks = {}
-  this.latestBlockNumber = 0;
+  this.latestBlockNumber = 0
   this.txs = {}
 
   this.init = function (config) {

remix-simulator/src/server.js

@@ -54,7 +54,12 @@ class Server {
       })
     }
 
-    app.listen(port, host, () => log('Remix Simulator listening on port ' + host + ':' + port))
+    app.listen(port, host, () => {
+      log('Remix Simulator listening on ws://' + host + ':' + port)
+      if (!this.rpcOnly) {
+        log('http json-rpc is deprecated and disabled by default. To enable it use --rpc')
+      }
+    })
   }
 }