regen with never protoc-gen-go

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

api/httpbody.pb.go

@@ -14,14 +14,13 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.25.0-devel
+// 	protoc-gen-go v1.26.0-devel
 // 	protoc        v3.6.1
 // source: api/httpbody.proto
 
 package api
 
 import (
-	proto "github.com/golang/protobuf/proto"
 	any "github.com/golang/protobuf/ptypes/any"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
@@ -36,10 +35,6 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
-// This is a compile-time assertion that a sufficiently up-to-date version
-// of the legacy proto package is being used.
-const _ = proto.ProtoPackageIsVersion4
-
 // Message that represents an arbitrary HTTP body. It should only be used for
 // payload formats that can't be represented as JSON, such as raw binary or
 // an HTML page.