3.x: Updated javadocCleanup to use logger and remove semi-colons

[benjamintboyle]

Instead of print use logger. Remove semi-colons.

[codecov]

Codecov Report

Merging #7264 (7cd9c1c) into 3.x (74ab248) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@ Coverage Diff @@ ## 3.x #7264 +/- ## ============================================ - Coverage 99.55% 99.54% -0.02%  Complexity 6757 6757 ============================================ Files 747 747 Lines 47391 47391 Branches 6382 6382 ============================================ - Hits 47180 47173 -7  - Misses 92 96 +4  - Partials 119 122 +3 

Impacted Files	Coverage Δ	Complexity Δ
.../operators/completable/CompletableConcatArray.java	93.75% <0.00%> (-6.25%)	2.00% <0.00%> (ø%)
...l/operators/observable/ObservableFlatMapMaybe.java	95.07% <0.00%> (-2.82%)	2.00% <0.00%> (ø%)
...rnal/operators/flowable/FlowableFlatMapSingle.java	94.18% <0.00%> (-2.33%)	2.00% <0.00%> (ø%)
...va/io/reactivex/rxjava3/subjects/AsyncSubject.java	97.87% <0.00%> (-2.13%)	44.00% <0.00%> (-1.00%)
...reactivex/rxjava3/processors/PublishProcessor.java	98.16% <0.00%> (-1.84%)	41.00% <0.00%> (-1.00%)
...tivex/rxjava3/internal/jdk8/ParallelCollector.java	96.33% <0.00%> (-1.84%)	2.00% <0.00%> (ø%)
...ternal/operators/completable/CompletableMerge.java	97.29% <0.00%> (-1.36%)	2.00% <0.00%> (ø%)
...java3/internal/operators/flowable/FlowableZip.java	98.97% <0.00%> (-1.03%)	6.00% <0.00%> (ø%)
...nternal/operators/observable/ObservableCreate.java	99.14% <0.00%> (ø)	2.00% <0.00%> (ø%)
...a3/internal/operators/flowable/FlowableCreate.java	99.35% <0.00%> (+0.32%)	6.00% <0.00%> (ø%)
... and 7 more

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