Remove Sonar Integration (hyperledger#4135)

Sonar has been removed from the build workflow. This PR removes all
configuration and code markings that were used to facilitate it.

Signed-off-by: Danno Ferrin <danno.ferrin@gmail.com>

.circleci/config.yml

@@ -212,11 +212,6 @@ jobs:
           command: |
             ./gradlew --no-daemon build
       - capture_test_results
-# Temporarily disabled
-#      - run:
-#          name: SonarQube
-#          no_output_timeout: 30m
-#          command: ./gradlew --no-daemon jacocoRootReport sonarqube -Dsonar.login=$SONAR_TOKEN
 
   integrationTests:
     executor: xl_machine_executor
@@ -411,9 +406,7 @@ workflows:
             - dco
             - spotless
       - unitTests:
-# Temporarily disabled
-#          context: SonarCloud
-          requires:
+           requires:
             - assemble
       - testWindows:
           requires:

besu/src/main/java/org/hyperledger/besu/cli/BesuCommand.java

@@ -1190,7 +1190,7 @@ static class TxPoolOptionGroup {
             "Maximum number of pending transaction hashes that will be kept in the transaction pool (default: ${DEFAULT-VALUE})",
         arity = "1")
     @SuppressWarnings("unused")
-    private final Integer pooledTransactionHashesSize = null; // NOSONAR
+    private final Integer pooledTransactionHashesSize = null;
 
     @Option(
         names = {"--tx-pool-retention-hours"},
@@ -1906,7 +1906,7 @@ private void issueOptionWarnings() {
           "--privacy-flexible-groups-enabled");
     }
 
-    if (txPoolOptionGroup.pooledTransactionHashesSize != null) { // NOSONAR
+    if (txPoolOptionGroup.pooledTransactionHashesSize != null) {
       logger.warn(DEPRECATED_AND_USELESS_WARNING_MSG, "--tx-pool-hashes-max-size");
     }
   }
@@ -2136,7 +2136,7 @@ private JsonRpcConfiguration createEngineJsonRpcConfiguration(
       engineConfig.setAuthenticationEnabled(true);
       engineConfig.setAuthenticationAlgorithm(JwtAlgorithm.HS256);
       if (Objects.nonNull(engineRPCOptionGroup.engineJwtKeyFile)
-          && java.nio.file.Files.exists(engineRPCOptionGroup.engineJwtKeyFile)) { // NOSONAR
+          && java.nio.file.Files.exists(engineRPCOptionGroup.engineJwtKeyFile)) {
         engineConfig.setAuthenticationPublicKeyFile(engineRPCOptionGroup.engineJwtKeyFile.toFile());
       } else {
         logger.info(

build.gradle

@@ -28,21 +28,8 @@ plugins {
   id 'me.champeau.jmh' version '0.6.6' apply false
   id 'net.ltgt.errorprone' version '2.0.2'
   id 'maven-publish'
-  id 'org.sonarqube' version '3.4.0.2513'
 }
 
-sonarqube {
-  properties {
-    property "sonar.projectKey", "hyperledger_besu"
-    property "sonar.organization", "hyperledger"
-    property "sonar.host.url", "https://sonarcloud.io"
-    property "sonar.coverage.jacoco.xmlReportPaths", "${buildDir}/reports/jacoco/jacocoRootReport/jacocoRootReport.xml"
-    property "sonar.coverage.exclusions", "acceptance-tests/**/*"
-  }
-}
-
-project.tasks["sonarqube"].dependsOn "jacocoRootReport"
-
 if (!JavaVersion.current().java11Compatible) {
   throw new GradleException("Java 11 or later is required to build Besu.\n" +
   "  Detected version ${JavaVersion.current()}")

util/src/main/java/org/hyperledger/besu/util/Slf4jLambdaHelper.java

@@ -25,7 +25,6 @@
  */
 public class Slf4jLambdaHelper {
 
-  // sonar code smell
   private Slf4jLambdaHelper() {}
 
   public static void warnLambda(