removed properties from score spec

[sujaya-sys]

Description

We are planning to deprecate resource properties in the Score spec: score-spec/spec#61

What does this PR do?

It removes resource properties from the example score.yaml files we store in this repo

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• New chore (expected functionality to be implemented)

Checklist:

• My change requires a change to the documentation.
  • I have updated the documentation accordingly.
• I've signed off with an email address that matches the commit author.

[ghen]

CLI code needs to be updated. Otherwise these examples won't work and that would confuse the users.

Please wait for code changes before approving/merging these changes.

[ghen]

LGTM
Would appreciate someone else to take a look too

[chrishumanitec]

LGTM