Athena: Remove duplicate first row

[fiskus]

Practically found that first row have column names always, but didn't find that in documentation or on StackOverflow (only questions on how to skip first row when create table)

• So, I check if first row have column names, then skip. I have dedicated columns field already
• Replaced use of first row for checking if table have package manifest with use of columns

[codecov]

Codecov Report

Merging #3101 (86cf269) into master (cde94d0) will decrease coverage by 0.00%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #3101      +/-   ##
==========================================
- Coverage   35.33%   35.33%   -0.01%     
==========================================
  Files         642      642              
  Lines       28451    28454       +3     
  Branches     4160     4161       +1     
==========================================
  Hits        10053    10053              
- Misses      17224    17227       +3     
  Partials     1174     1174              

Flag	Coverage Δ
api-python	90.72% <ø> (ø)
catalog	8.04% <0.00%> (-0.01%)	⬇️
lambda	86.05% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...og/app/containers/Bucket/Queries/Athena/Athena.tsx	0.00% <0.00%> (ø)
...containers/Bucket/Queries/Athena/CreatePackage.tsx	0.00% <0.00%> (ø)
...g/app/containers/Bucket/Queries/requests/athena.ts	0.00% <0.00%> (ø)

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