Remove @views from OHE

[glennmoy]

This isn't needed since we're directly applying setindex! on result.
Benchmarks below confirm no loss of performance

julia> using FeatureTransforms, Random

julia> Random.seed!(1);

julia> X = rand(1.0:10.0, 100, 100);

julia> t = OneHotEncoding(1:10);

julia>  @time FeatureTransforms.apply(X, t; dims=1);
           @time FeatureTransforms.apply(X, t; dims=1);

# this branch
  0.129256 seconds (685.02 k allocations: 34.652 MiB, 6.44% gc time)
  0.000381 seconds (10.01 k allocations: 254.109 KiB)

# main
  0.131076 seconds (685.94 k allocations: 34.710 MiB, 8.55% gc time)
  0.000418 seconds (10.01 k allocations: 254.109 KiB)

[codecov]

Codecov Report

Merging #51 (33abe28) into main (2bb89cb) will increase coverage by 0.17%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #51      +/-   ##
==========================================
+ Coverage   98.85%   99.02%   +0.17%     
==========================================
  Files           9        9              
  Lines          87      103      +16     
==========================================
+ Hits           86      102      +16     
  Misses          1        1              

Impacted Files	Coverage Δ
src/one_hot_encoding.jl	100.00% <100.00%> (ø)
src/scaling.jl	100.00% <0.00%> (ø)
src/periodic.jl	100.00% <0.00%> (ø)
src/transformers.jl	100.00% <0.00%> (ø)
src/linear_combination.jl	100.00% <0.00%> (ø)

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[morris25]

Does this need a version bump?