Remove LICENSE and README files from the archice

[joshuahannan]

Problem

When installing the latest preview release of the CLI, I get an error:

sh -ci "$(curl -fsSL https://raw.githubusercontent.com/onflow/flow-cli/feature/stable-cadence/install.sh)"

Downloading version v1.18.0-cadence-v1.0.0-preview.23 ...
##################################################################################################################################################################################################### 100.0%
LICENSE: Can't unlink already-existing object
README.md: Can't unlink already-existing object
flow-cli: Can't create 'flow-cli'
tar: Error exit delayed from previous errors.

Steps to Reproduce

Not sure how to reproduce it because it isn't happening for others.

Acceptance Criteria

It sounds like LICENSE and README should not be in the archive at all, so we should remove them.

Context

Blocking me from being able to test the token standards and core contracts with the latest CLI.