Removed strange statement about encryption
Removed strange statement about encryption

base64 is not an encryption algorithm, and there is no mention of DES in this chapter
admpub/build-web-application-with-golang,astaxie/build-web-application-with-golang,WangKaimin/build-web-application-with-golang,admpub/build-web-application-with-golang,WangKaimin/build-web-application-with-golang,admpub/build-web-application-with-golang,astaxie/build-web-application-with-golang,admpub/build-web-application-with-golang,astaxie/build-web-application-with-golang