fix error finding zip file

contracts/sh/prepare-ec2.sh

@@ -16,6 +16,7 @@ sudo apt-get install -y cmake build-essential libgmp-dev libsodium-dev nlohmann-
 curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
 unzip awscliv2.zip
 sudo ./aws/install
+rm awscliv2.zip
 
 # install rust
 curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | bash -s -- -y
@@ -52,4 +53,4 @@ cd contracts && yarn build
 crontab -l > tmpcron
 echo "@reboot /home/ubuntu/monorepo/contracts/sh/start-tally-with-logging.sh" >> tmpcron
 crontab tmpcron
-rm tmpcron awscliv2.zip
+rm tmpcron