Refactor: Simplify code

[mghio]

What's the purpose of this PR

Simplify code.

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[codecov-commenter]

Codecov Report

Merging #4524 (bd735c0) into master (dfbffe5) will decrease coverage by 0.02%.
The diff coverage is 75.00%.

@@             Coverage Diff              @@
##             master    #4524      +/-   ##
============================================
- Coverage     53.45%   53.43%   -0.03%     
- Complexity     2706     2707       +1     
============================================
  Files           492      492              
  Lines         15393    15390       -3     
  Branches       1595     1596       +1     
============================================
- Hits           8229     8223       -6     
- Misses         6606     6607       +1     
- Partials        558      560       +2     

Impacted Files	Coverage Δ
...apollo/spring/annotation/SpringValueProcessor.java	81.69% <ø> (ø)
...o/spring/annotation/ApolloAnnotationProcessor.java	91.17% <69.23%> (-1.90%)	⬇️
...work/apollo/spring/annotation/ApolloProcessor.java	100.00% <100.00%> (ø)
.../apollo/internals/RemoteConfigLongPollService.java	77.84% <0.00%> (-0.60%)	⬇️

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[nobodyiam]

LGTM