Remove TEMPORARY_DISABLE_PATH_RESTRICTIONS

This was a temporary migration tool, and has been broken ever since the
ninja environment started being restricted. Remove it, since it has
lasted two releases.

Test: TEMPORARY_DISABLE_PATH_RESTRICTIONS=true m
Change-Id: I2e3709525598030f5c24d12fa966e531dfed33ae

cmd/path_interposer/main.go

@@ -53,14 +53,7 @@ func main() {
 		os.Exit(1)
 	}
 
-	disableError := false
-	if e, ok := os.LookupEnv("TEMPORARY_DISABLE_PATH_RESTRICTIONS"); ok {
-		disableError = e == "1" || e == "y" || e == "yes" || e == "on" || e == "true"
-	}
-
 	exitCode, err := Main(os.Stdout, os.Stderr, interposer, os.Args, mainOpts{
-		disableError: disableError,
-
 		sendLog:       paths.SendLog,
 		config:        paths.GetConfig,
 		lookupParents: lookupParents,
@@ -79,8 +72,6 @@ If a tool isn't in the allowed list, a log will be posted to the unix domain
 socket at <interposer>_log.`)
 
 type mainOpts struct {
-	disableError bool
-
 	sendLog       func(logSocket string, entry *paths.LogEntry, done chan interface{})
 	config        func(name string) paths.PathConfig
 	lookupParents func() []paths.LogProcess
@@ -131,7 +122,7 @@ func Main(stdout, stderr io.Writer, interposer string, args []string, opts mainO
 			}, waitForLog)
 			defer func() { <-waitForLog }()
 		}
-		if config.Error && !opts.disableError {
+		if config.Error {
 			return 1, fmt.Errorf("%q is not allowed to be used. See https://android.googlesource.com/platform/build/+/master/Changes.md#PATH_Tools for more information.", base)
 		}
 	}