Consider S1854 - Unused assignments should be removed

[lyxell]

https://rules.sonarsource.com/java/RSPEC-1854

[lyxell]

Real world tests

• https://github.com/GUMGA/framework-backend/pull/8
• https://github.com/apptik/MultiView/pull/4
• https://github.com/cflint/CFLint/pull/160/files
• https://github.com/locationtech/spatial4j/blob/ff9aa364688e229d2a5e481eba288aecba7e6bdc/src/main/java/org/locationtech/spatial4j/io/GeohashUtils.java
• https://github.com/paypal/sdk-core-java/pull/63/files
• https://github.com/rdiachenko/checkstyle/commit/8a3f5bf6d5389b9e175c9c769992faece6d76ada#diff-432335a67ad4cc120a97acc8d7c46b62dc5eb3c7ba64cfc5203f9ade29987171
• https://github.com/testwhat/SmaliEx/pull/34/files

[lyxell]

Fixed