Revert "Add a spreadsheet to test OpenCL implementation on user request"

Nah, will generate the test sheeet(s) programmatically.

This reverts commit 9c2cf556a6ba532ad26a3b4d96e42f9f2b5e00ac.
Generate OpenCL test doc programmatically, first version

Tests RAND, SUM, AVERAGE, SIN, COS, TAN, ATAN, SQRT, EXP, LN at the moment.
More will be added.

Does not yet automatically add to black/whitelist.

Change-Id: I2ca24632630937ee5559fc86453e40178e89973f