build: remove build constraint syntax for go 1.16 and older

cmd/serve/dlna/data/assets_generate.go

@@ -1,7 +1,6 @@
 //go:generate go run assets_generate.go
 // The "go:generate" directive compiles static assets by running assets_generate.go
 //go:build ignore
-// +build ignore
 
 package main
 

cmd/serve/docker/docker_test.go

@@ -1,5 +1,4 @@
 //go:build !race
-// +build !race
 
 package docker_test
 

cmd/serve/docker/systemd.go

@@ -1,5 +1,4 @@
 //go:build linux && !android
-// +build linux,!android
 
 package docker
 

cmd/serve/docker/systemd_unsupported.go

@@ -1,5 +1,4 @@
 //go:build !linux || android
-// +build !linux android
 
 package docker
 

cmd/serve/docker/unix.go

@@ -1,5 +1,4 @@
 //go:build linux || freebsd
-// +build linux freebsd
 
 package docker
 

cmd/serve/docker/unix_unsupported.go

@@ -1,5 +1,4 @@
 //go:build !linux && !freebsd
-// +build !linux,!freebsd
 
 package docker
 

cmd/serve/ftp/ftp.go

@@ -1,5 +1,4 @@
 //go:build !plan9
-// +build !plan9
 
 // Package ftp implements an FTP server for rclone
 package ftp

cmd/serve/ftp/ftp_test.go

@@ -4,7 +4,6 @@
 // We skip tests on platforms with troublesome character mappings
 
 //go:build !windows && !darwin && !plan9
-// +build !windows,!darwin,!plan9
 
 package ftp
 

cmd/serve/ftp/ftp_unsupported.go

@@ -2,7 +2,6 @@
 // about "no buildable Go source files "
 
 //go:build plan9
-// +build plan9
 
 package ftp
 

cmd/serve/nfs/filesystem.go

@@ -1,5 +1,4 @@
 //go:build unix
-// +build unix
 
 package nfs
 

cmd/serve/nfs/handler.go

@@ -1,5 +1,4 @@
 //go:build unix
-// +build unix
 
 package nfs
 

cmd/serve/nfs/nfs.go

@@ -1,5 +1,4 @@
 //go:build unix
-// +build unix
 
 // Package nfs implements a server to serve a VFS remote over NFSv3 protocol
 //

cmd/serve/nfs/nfs_unsupported.go

@@ -1,6 +1,5 @@
 // For unsupported architectures
 //go:build !unix
-// +build !unix
 
 // Package nfs is not supported on non-Unix platforms
 package nfs

cmd/serve/nfs/server.go

@@ -1,5 +1,4 @@
 //go:build unix
-// +build unix
 
 package nfs
 

cmd/serve/proxy/proxy_code.go

@@ -1,5 +1,4 @@
 //go:build ignore
-// +build ignore
 
 // A simple auth proxy for testing purposes
 package main

cmd/serve/servetest/proxy_code.go

@@ -1,5 +1,4 @@
 //go:build ignore
-// +build ignore
 
 // A simple auth proxy for testing purposes
 package main

cmd/serve/sftp/connection.go

@@ -1,5 +1,4 @@
 //go:build !plan9
-// +build !plan9
 
 package sftp
 

cmd/serve/sftp/connection_test.go

@@ -1,5 +1,4 @@
 //go:build !plan9
-// +build !plan9
 
 package sftp
 

cmd/serve/sftp/handler.go

@@ -1,5 +1,4 @@
 //go:build !plan9
-// +build !plan9
 
 package sftp
 

cmd/serve/sftp/server.go

@@ -1,5 +1,4 @@
 //go:build !plan9
-// +build !plan9
 
 package sftp
 

cmd/serve/sftp/sftp.go

@@ -1,5 +1,4 @@
 //go:build !plan9
-// +build !plan9
 
 // Package sftp implements an SFTP server to serve an rclone VFS
 package sftp

cmd/serve/sftp/sftp_test.go

@@ -4,7 +4,6 @@
 // We skip tests on platforms with troublesome character mappings
 
 //go:build !windows && !darwin && !plan9
-// +build !windows,!darwin,!plan9
 
 package sftp
 

cmd/serve/sftp/sftp_unsupported.go

@@ -2,7 +2,6 @@
 // about "no buildable Go source files "
 
 //go:build plan9
-// +build plan9
 
 package sftp
 

cmd/serve/webdav/webdav_test.go

@@ -4,7 +4,6 @@
 // We skip tests on platforms with troublesome character mappings
 
 //go:build !windows && !darwin
-// +build !windows,!darwin
 
 package webdav