fix: switch the mirror selection responsibility to serverless

[EricRibeiro]

Motivation

• Closes syntax error near unexpected token `newline' #40

Changes

• Shifts the responsibility of mirror selection to serverless.

For whatever reason, the cloud provider we were getting the script from is throwing errors. So, instead of getting it from them, we will leave Serverles pick what is best based on the mirror parameter. They have some logic around it here:

if [[ $IS_IN_CHINA == "1" ]]
then
	# In China download from location in China (Github API download is slow and times out)
	BINARY_URL=https://sls-standalone-sv-1300963013.cos.na-siliconvalley.myqcloud.com/$TAG/serverless-$PLATFORM-$ARCH
else
	BINARY_URL=https://github.com/serverless/serverless/releases/download/$TAG/serverless-$PLATFORM-$ARCH
fi

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Your development orb has been published. It will expire in 30 days.
You can preview what this will look like on the CircleCI Orb Registry at the following link:
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