Let spring-cloud-build manage kotlin-maven-plugin

Fixes gh-3912

Author: spencergibb

spring-cloud-gateway-sample/pom.xml

@@ -95,12 +95,6 @@
 			<plugin>
 				<groupId>org.jetbrains.kotlin</groupId>
 				<artifactId>kotlin-maven-plugin</artifactId>
-				<configuration>
-					<args>
-						<arg>-Xjsr305=strict</arg>
-					</args>
-					<jvmTarget>17</jvmTarget>
-				</configuration>
 				<executions>
 					<execution>
 						<id>compile</id>

spring-cloud-gateway-server/pom.xml

@@ -273,12 +273,8 @@
 	<build>
 		<plugins>
 			<plugin>
-				<!-- Based on instructions here - https://kotlinlang.org/docs/reference/using-maven.html -->
 				<artifactId>kotlin-maven-plugin</artifactId>
 				<groupId>org.jetbrains.kotlin</groupId>
-				<configuration>
-					<jvmTarget>17</jvmTarget>
-				</configuration>
 				<executions>
 					<execution>
 						<id>compile</id>