Polish "Remove deprecated Joda-Time support"

See gh-19699

Author: snicoll

Diff for: spring-boot-project/spring-boot-cli/src/test/java/org/springframework/boot/cli/GrabCommandIntegrationTests.java

@@ -61,7 +61,7 @@ void grab() throws Exception {
 		System.setProperty("groovy.grape.report.downloads", "true");
 		// Use --autoconfigure=false to limit the amount of downloaded dependencies
 		String output = this.cli.grab("grab.groovy", "--autoconfigure=false");
-		assertThat(new File(this.cli.getTemp(), "repository/joda-time/joda-time")).isDirectory();
+		assertThat(new File(this.cli.getTemp(), "repository/com/fasterxml/jackson/core/jackson-core")).isDirectory();
 		assertThat(output).contains("Downloading: ");
 	}
 

Diff for: spring-boot-project/spring-boot-cli/src/test/resources/grab-samples/grab.groovy

@@ -1,4 +1,4 @@
-@Grab('joda-time')
+@Grab('jackson-core')
 class GrabTest {
 
 }

Diff for: spring-boot-project/spring-boot-dependencies/build.gradle

@@ -911,13 +911,6 @@ bom {
 			]
 		}
 	}
-	library('Joda Time', '2.10.5') {
-		group('joda-time') {
-			modules = [
-				'joda-time'
-			]
-		}
-	}
 	library('Johnzon', '1.2.2') {
 		group('org.apache.johnzon') {
 			modules = [