fix delete for void return type

[dmitry-s]

fixes #2169

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities (and 0 Security Hotspots to review)
0 Code Smells

85.7% Coverage
0.0% Duplication

[codecov]

Codecov Report

Merging #2177 into master will increase coverage by 0.22%.
The diff coverage is 0%.

@@             Coverage Diff              @@
##             master    #2177      +/-   ##
============================================
+ Coverage     72.76%   72.99%   +0.22%     
- Complexity     1933     1954      +21     
============================================
  Files           245      247       +2     
  Lines          7083     7105      +22     
  Branches        733      733              
============================================
+ Hits           5154     5186      +32     
+ Misses         1589     1583       -6     
+ Partials        340      336       -4

Flag	Coverage Δ	Complexity Δ
#integration	?	?
#unittests	72.99% <0%> (+0.22%)	1954 <0> (+21)	⬆️

Impacted Files	Coverage Δ	Complexity Δ
...store/repository/query/PartTreeDatastoreQuery.java	90.5% <0%> (+6.32%)	59 <0> (+9)	⬆️
...k/cloud/gcp/data/spanner/core/SpannerTemplate.java	76.71% <0%> (-0.3%)	86% <0%> (ø)
...anner/core/admin/SpannerDatabaseAdminTemplate.java	82.81% <0%> (-0.27%)	20% <0%> (ø)
...data/spanner/repository/query/SqlSpannerQuery.java	84.8% <0%> (-0.24%)	29% <0%> (ø)
...gcp/data/spanner/core/convert/ConversionUtils.java	88.46% <0%> (ø)	11% <0%> (ø)	⬇️
...epository/query/SpannerStatementQueryExecutor.java	83.33% <0%> (ø)	52% <0%> (ø)	⬇️
...configure/pubsub/health/PubSubHealthIndicator.java	92.3% <0%> (ø)	3% <0%> (?)
...health/PubSubHealthIndicatorAutoConfiguration.java	100% <0%> (ø)	2% <0%> (?)
...store/repository/query/PartTreeFirestoreQuery.java	89.61% <0%> (+1.37%)	19% <0%> (+7%)	⬆️
...tastore/GcpDatastoreEmulatorAutoConfiguration.java	72.41% <0%> (+6.89%)	6% <0%> (ø)	⬇️
... and 1 more

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