removing rio-tiler dependencies and cog reading functions

[nrweir]

Temporarily removing these in order to build a conda feedstock until I can get cog functionality implemented and make sure rio-tiler is up on conda

[codecov]

Codecov Report

Merging #188 into dev will increase coverage by 0.43%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##              dev     #188      +/-   ##
==========================================
+ Coverage   70.88%   71.31%   +0.43%     
==========================================
  Files          65       65              
  Lines        4090     4058      -32     
==========================================
- Hits         2899     2894       -5     
+ Misses       1191     1164      -27

Impacted Files	Coverage Δ
solaris/utils/tile.py	100% <ø> (+65%)	⬆️
solaris/tile/raster_tile.py	72.07% <ø> (+0.1%)	⬆️
setup.py	0% <ø> (ø)	⬆️

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