Revert "Use SIGWINCH to update terminal size"

This reverts commit 49036be407.

Reason for revert: TestSmartStatusOutputWidthChange is flaky

Change-Id: Ie5231dbbab2887ce4c4697f3fe6e52cfd6f4dd17

ui/terminal/status_test.go

@@ -17,7 +17,6 @@ package terminal
 import (
 	"bytes"
 	"fmt"
-	"syscall"
 	"testing"
 
 	"android/soong/ui/status"
@@ -261,8 +260,6 @@ func TestSmartStatusOutputWidthChange(t *testing.T) {
 
 	runner.startAction(action)
 	smart.termWidth = 30
-	// Fake a SIGWINCH
-	stat.(*smartStatusOutput).sigwinch <- syscall.SIGWINCH
 	runner.finishAction(result)
 
 	stat.Flush()