Remove redundant import, making the code base compilable again

[jonkerj]

Description

#254 erroneously re-introduced the import of io/ioutil, which had been removed previously. Go complains about it, because it is not used since 73b198a, rendering the code base uncompilable.

This commit fixes that, and it is able to compile again.

Checklist

• tested locally
• updated any relevant dependencies
• updated any relevant documentation or examples

API Changes

Are there API changes?

• Yes
• No

If yes, please fill in the below

1. Updated conversions?
   • Yes
   • No
   • N/A
2. Updated CRDs?
   • Yes
   • No
   • N/A
3. Updated infrastructure-components.yaml?
   • Yes
   • No
   • N/A
4. Updated ./examples/capi-quickstart.yaml?
   • Yes
   • No
   • N/A
5. Updated necessary files under ./infrastructure-vcd/v1.0.0/?
   • Yes
   • No
   • N/A

Issue

n/a, I could open one, if needed.

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This change is 

[vmwclabot]

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[vmwclabot]

@jonkerj, we have received your signed contributor license agreement. It will be reviewed by VMware shortly. Another comment will be added to the pull request to notify you when the merge can proceed.

[vmwclabot]

@jonkerj, VMware has approved your signed contributor license agreement.

[arunmk]

Thanks @jonkerj