Remove pyhdb imports

[timogasda]

No description provided.

[codecov-io]

Codecov Report

Merging #7 into master will decrease coverage by 0.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master       #7      +/-   ##
==========================================
- Coverage   69.71%   69.69%   -0.02%     
==========================================
  Files          24       24              
  Lines        1925     1924       -1     
==========================================
- Hits         1342     1341       -1     
  Misses        583      583

Impacted Files	Coverage Δ
pyhdb/protocol/types.py	92.87% <100%> (ø)	⬆️
pyhdb/protocol/parts.py	59.37% <100%> (ø)	⬆️
pyhdb/cursor.py	20.16% <100%> (ø)	⬆️
pyhdb/cesu8.py	89.7% <100%> (ø)	⬆️
pyhdb/lib/tracing.py	96.61% <100%> (ø)	⬆️
pyhdb/__init__.py	32.5% <100%> (ø)	⬆️
pyhdb/protocol/headers.py	100% <100%> (ø)	⬆️
pyhdb/protocol/lobs.py	94.07% <100%> (ø)	⬆️
pyhdb/protocol/message.py	83.67% <100%> (+0.34%)	⬆️
pyhdb/protocol/segments.py	48.19% <100%> (-1.22%)	⬇️
... and 3 more

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