Removed waiting of the grpc channel ready

[alex268]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 88.88889% with 1 line in your changes missing coverage. Please review.

Project coverage is 61.68%. Comparing base (7c3d0e4) to head (39ad902).

Files with missing lines	Patch %	Lines
.../java/tech/ydb/core/grpc/GrpcTransportBuilder.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@                 Coverage Diff                  @@
##             release_v2.4.0     #518      +/-   ##
====================================================
- Coverage             61.70%   61.68%   -0.02%     
+ Complexity             2341     2340       -1     
====================================================
  Files                   331      331              
  Lines                 13468    13436      -32     
  Branches               1347     1344       -3     
====================================================
- Hits                   8310     8288      -22     
+ Misses                 4540     4532       -8     
+ Partials                618      616       -2     

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