Remove unused code from samples

[solrevdev]

My sample code has unused css at the very least. I tried to remove as much unnecessary styling and behavior from my sample as possible but I’ve clearly missed some bits.

I want the sample to look ok and behave but keep as simple as possible.

instagram-basic-display/samples/Web/Pages/Api/Index.cshtml

Line 71 in 610ca00

#transboxtext p {