flake8: resolve flake8 violations

[codecov-commenter]

Codecov Report

Merging #1756 (4e6d64a) into master (c6d7afb) will decrease coverage by 0.02%. The diff coverage is 26.19%.

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@@            Coverage Diff             @@
##           master    #1756      +/-   ##
==========================================
- Coverage   46.77%   46.76%   -0.02%     
==========================================
  Files         690      690              
  Lines       45683    45661      -22     
==========================================
- Hits        21369    21354      -15     
+ Misses      24314    24307       -7     

Impacted Files	Coverage Δ
modules/sfp_binaryedge.py	13.28% <0.00%> (+0.09%)	:arrow_up:
modules/sfp_dnsdumpster.py	27.53% <0.00%> (ø)
modules/sfp_greynoise.py	17.96% <0.00%> (-0.22%)	:arrow_down:
modules/sfp_hosting.py	33.96% <0.00%> (ø)
modules/sfp_onyphe.py	15.81% <0.00%> (+0.07%)	:arrow_up:
modules/sfp_securitytrails.py	22.38% <0.00%> (ø)
modules/sfp_socialprofiles.py	36.55% <0.00%> (ø)
modules/sfp_tool_nbtscan.py	31.42% <0.00%> (ø)
modules/sfp_tool_testsslsh.py	23.44% <0.00%> (ø)
modules/sfp_viewdns.py	24.26% <0.00%> (+0.17%)	:arrow_up:
... and 14 more

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