[breaking] Remove old gRPC Monitor service, in favor of new gRPC API based on pluggable monitor (#1504)

* Removed old Monitor gRPC service

* Updated UPGRADING.md

* Fixed broken links

* Updated licensed cache

Author: cmaglie

.licenses/go/google.golang.org/protobuf/encoding/protojson.dep.yml

@@ -198,15 +198,13 @@ tasks:
     desc: Compile protobuf definitions
     cmds:
       - '{{ default "protoc" .PROTOC_BINARY }} --proto_path=rpc --go_out=./rpc --go_opt=paths=source_relative --go-grpc_out=./rpc --go-grpc_opt=paths=source_relative ./rpc/cc/arduino/cli/commands/v1/*.proto'
-      - '{{ default "protoc" .PROTOC_BINARY }} --proto_path=rpc --go_out=./rpc --go_opt=paths=source_relative --go-grpc_out=./rpc --go-grpc_opt=paths=source_relative ./rpc/cc/arduino/cli/monitor/v1/*.proto'
       - '{{ default "protoc" .PROTOC_BINARY }} --proto_path=rpc --go_out=./rpc --go_opt=paths=source_relative --go-grpc_out=./rpc --go-grpc_opt=paths=source_relative ./rpc/cc/arduino/cli/settings/v1/*.proto'
       - '{{ default "protoc" .PROTOC_BINARY }} --proto_path=rpc --go_out=./rpc --go_opt=paths=source_relative --go-grpc_out=./rpc --go-grpc_opt=paths=source_relative ./rpc/cc/arduino/cli/debug/v1/*.proto'
 
   protoc:docs:
     desc: Generate docs for protobuf definitions
     cmds:
       - '{{ default "protoc" .PROTOC_BINARY }} --doc_out=./docs/rpc --doc_opt=markdown,commands.md --proto_path=rpc ./rpc/cc/arduino/cli/commands/v1/*.proto'
-      - '{{ default "protoc" .PROTOC_BINARY }} --doc_out=./docs/rpc --doc_opt=markdown,monitor.md --proto_path=rpc ./rpc/cc/arduino/cli/monitor/v1/*.proto'
       - '{{ default "protoc" .PROTOC_BINARY }} --doc_out=./docs/rpc --doc_opt=markdown,settings.md --proto_path=rpc ./rpc/cc/arduino/cli/settings/v1/*.proto'
       - '{{ default "protoc" .PROTOC_BINARY }} --doc_out=./docs/rpc --doc_opt=markdown,debug.md --proto_path=rpc ./rpc/cc/arduino/cli/debug/v1/*.proto'
 

.licenses/go/google.golang.org/protobuf/internal/encoding/json.dep.yml

@@ -33,7 +33,6 @@ import (
 	"github.com/arduino/arduino-cli/i18n"
 	srv_commands "github.com/arduino/arduino-cli/rpc/cc/arduino/cli/commands/v1"
 	srv_debug "github.com/arduino/arduino-cli/rpc/cc/arduino/cli/debug/v1"
-	srv_monitor "github.com/arduino/arduino-cli/rpc/cc/arduino/cli/monitor/v1"
 	srv_settings "github.com/arduino/arduino-cli/rpc/cc/arduino/cli/settings/v1"
 	"github.com/arduino/go-paths-helper"
 	"github.com/sirupsen/logrus"
@@ -106,9 +105,6 @@ func runDaemonCommand(cmd *cobra.Command, args []string) {
 		VersionString: globals.VersionInfo.VersionString,
 	})
 
-	// Register the monitors service
-	srv_monitor.RegisterMonitorServiceServer(s, &daemon.MonitorService{})
-
 	// Register the settings service
 	srv_settings.RegisterSettingsServiceServer(s, &daemon.SettingsService{})