Remove quickstart guide

[DonJayamanne]

Description:

Remove quick start guide (not required).

Type of change

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• [n/a] I have commented my code, particularly in hard-to-understand areas
• [n/a] I have made corresponding changes to the documentation
• [n/a] My changes generate no new warnings
• [n/a] Any dependent changes have been merged and published in downstream modules

[jonathanwangg]

Good catch!