Remove extraneous debugging code

Signed-off-by: Jonathan Rudenberg <jonathan@titanous.com>

Author: titanous

decode.go

@@ -14,7 +14,6 @@ import (
 "math"
 "reflect"
 "runtime"
-"runtime/debug"
 "strconv"
 "unicode"
 "unicode/utf16"
@@ -308,9 +307,6 @@ func (d *decodeState) init(data []byte) *decodeState {
 
 // error aborts the decoding by panicking with err.
 func (d *decodeState) error(err error) {
-if err == errPhase {
-debug.PrintStack()
-}
 panic(err)
 }