Mod: delete a judgment condition

[fangyincheng]

What this PR does:

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

[codecov-io]

Codecov Report

Merging #406 into develop will decrease coverage by 0.05%.
The diff coverage is 0%.

@@             Coverage Diff             @@
##           develop     #406      +/-   ##
===========================================
- Coverage    67.36%   67.31%   -0.06%     
===========================================
  Files          161      161              
  Lines         8340     8339       -1     
===========================================
- Hits          5618     5613       -5     
- Misses        2199     2202       +3     
- Partials       523      524       +1

Impacted Files	Coverage Δ
config_center/parser/configuration_parser.go	2.15% <0%> (+0.01%)	⬆️
config_center/nacos/facade.go	64.7% <0%> (-8.83%)	⬇️
cluster/cluster_impl/failback_cluster_invoker.go	78.49% <0%> (-2.16%)	⬇️

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[AlexStocks]

LGTM