Remove deprecated functions

[msyriac]

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Project coverage is 39.96%. Comparing base (f23a85c) to head (80e0530). Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
pixell/reproject.py	0.00%	4 Missing :warning:
pixell/enmap.py	0.00%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #303      +/-   ##
==========================================
- Coverage   39.97%   39.96%   -0.01%     
==========================================
  Files          32       32              
  Lines       10560    10559       -1     
==========================================
- Hits         4221     4220       -1     
  Misses       6339     6339              

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