Remove unused imports in KotlinSpringServerCodegenTest

Author: cgual-omnidian

modules/openapi-generator/src/test/java/org/openapitools/codegen/kotlin/spring/KotlinSpringServerCodegenTest.java

@@ -16,10 +16,8 @@
 import org.openapitools.codegen.DefaultGenerator;
 import org.openapitools.codegen.TestUtils;
 import org.openapitools.codegen.config.CodegenConfigurator;
-import org.openapitools.codegen.java.assertions.JavaFileAssert;
 import org.openapitools.codegen.kotlin.KotlinTestUtils;
 import org.openapitools.codegen.languages.KotlinSpringServerCodegen;
-import org.openapitools.codegen.languages.SpringCodegen;
 import org.openapitools.codegen.languages.features.CXFServerFeatures;
 import org.openapitools.codegen.languages.features.DocumentationProviderFeatures;
 import org.openapitools.codegen.languages.features.DocumentationProviderFeatures.AnnotationLibrary;