Fix broken tab markup

Closes gh-42046

Author: philwebb

spring-boot-project/spring-boot-tools/spring-boot-gradle-plugin/src/docs/antora/modules/gradle-plugin/pages/aot.adoc

@@ -24,15 +24,6 @@ include::example$aot/apply-native-image-plugin.gradle.kts[]
 ======
 
 
-.Groovy
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-
-.Kotlin
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-
-
 
 [[aot.processing-applications]]
 == Processing Applications