Simplified creation of array from scalar.

[jorgecarleitao]

Closes #431

[codecov-commenter]

Codecov Report

Merging #432 (80bafa4) into master (3593d1f) will increase coverage by 0.00%.
The diff coverage is 20.00%.

@@           Coverage Diff           @@
##           master     #432   +/-   ##
=======================================
  Coverage   74.85%   74.85%           
=======================================
  Files         146      146           
  Lines       24565    24562    -3     
=======================================
- Hits        18387    18386    -1     
+ Misses       6178     6176    -2     

Impacted Files	Coverage Δ
datafusion/src/scalar.rs	58.45% <20.00%> (+0.13%)	⬆️

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[Dandandan]

He @jorgecarleitao

Looks good, I already did the same in #339 😂

[alamb]

Thanks @jorgecarleitao and @Dandandan

[jorgecarleitao]

Closing in favor of #339 👍