Stop setting ASAN_OPTIONS for kati

Kati sets detect_leaks=0 by default now.

Test: unset ASAN_OPTIONS; SANITIZE_HOST=address m nothing
Change-Id: I0cbf04ae9ed40de520abca3fb35c65e7f543682d

ui/build/kati.go

@@ -101,9 +101,6 @@ func runKati(ctx Context, config Config) {
 	}
 	cmd.Stderr = cmd.Stdout
 
-	// Kati leaks memory, so ensure leak detection is turned off
-	cmd.Environment.Set("ASAN_OPTIONS", "detect_leaks=0")
-
 	cmd.StartOrFatal()
 	katiRewriteOutput(ctx, pipe)
 	cmd.WaitOrFatal()