eliminated unused setWindowSize files.

Makefile

@@ -1,4 +1,4 @@
-.DEFAULT_GOAL := build
+.DEFAULT_GOAL := all
 
 # seems superfluous
 #.PHONY: fmt vet build clean
@@ -20,3 +20,4 @@ buildwin:
 clean:
 	rm -rf bin
 
+all: build buildwin

cmd/agent/agent_linux.go

@@ -1,12 +0,0 @@
-package main
-
-import (
-	"os"
-	"syscall"
-	"unsafe"
-)
-
-func setWinsize(f *os.File, w, h int) {
-	syscall.Syscall(syscall.SYS_IOCTL, f.Fd(), uintptr(syscall.TIOCSWINSZ),
-		uintptr(unsafe.Pointer(&struct{ h, w, x, y uint16 }{uint16(h), uint16(w), 0, 0})))
-}

cmd/agent/agent_windows.go

@@ -1,7 +0,0 @@
-package main
-
-import "os"
-
-func setWinsize(f *os.File, w, h int) {
-	// Empty
-}