fix: remove unused import in lottery template

[RutvikGhaskataEalf]

No description provided.

[vizipi]

Pull request analysis by VIZIPI

Below you will find who is the most qualified team member to review your code.
This analysis includes his/her work on the code included in this Pull request, in addition to their experience in code affected by these changes ( partly found within the list of potential missing files below )   Feedback always welcome

Reviewers with knowledge related to these changes

Match %	Person	Commit Count	Common Files
100.00%	zhifenglee-portkey	3	2

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Potential missing files from this Pull request

files commonly committed with a subset of this pr, but not committed this time. (click to collapse)

File	Percentile	rate
...templates/LotteryGameContract/test/Protobuf/message/autho	50.00%	1 out of 2 times
templates/LotteryGameContract/test/_Setup.cs	50.00%	1 out of 2 times
templates/LotteryGameContract/src/ContractReferences.cs	50.00%	1 out of 2 times
...templates/LotteryGameContract/test/Protobuf/stub/token_co	50.00%	1 out of 2 times
...templates/LotteryGameContract/src/Protobuf/reference/aedp	50.00%	1 out of 2 times
...templates/LotteryGameContract/src/Protobuf/message/author	50.00%	1 out of 2 times
templates/LotteryGameContract/test/LotteryGame.Tests.csproj	50.00%	1 out of 2 times
...templates/LotteryGameContract/src/Protobuf/contract/lotte	50.00%	1 out of 2 times
templates/AElf.Contract.Template.csproj	50.00%	1 out of 2 times
...templates/LotteryGameContract/test/Protobuf/stub/lottery_	50.00%	1 out of 2 times

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Committed file ranks

(click to expand)

23.89%[...templates/LotteryGameContract/src/Protobuf/reference/acs1]

23.89%[...templates/LotteryGameContract/test/Protobuf/reference/acs]

[zhifenglee-aelf]

LGTM