5000 NAIRA NOTE, TO BE OR NOT TO BE?

I will start with a little piece of information; On may 3 2007, Zimbabwe issued currency notes with face values of Z$100m and Z$250m. On may 15 2007, a new bank note of Z$500m was issued, followed by the issues on 20th may 2007 of currency notes in denomination of Z$5b, Z$25b and Z$50b. Finally on July 21 2007 bank notes with a face values of Z$100b were issued. Eventually Zimbabwe abandoned its own currency and legalized the use of only foreign currency. My people is this 5000 Naira note needed?