clean unused codes (#9606)

oap-server/server-storage-plugin/storage-jdbc-hikaricp-plugin/src/main/java/org/apache/skywalking/oap/server/storage/plugin/jdbc/h2/H2StorageProvider.java

@@ -21,7 +21,6 @@ package org.apache.skywalking.oap.server.storage.plugin.jdbc.h2;
 import java.util.Properties;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.skywalking.oap.server.core.CoreModule;
-import org.apache.skywalking.oap.server.core.config.ConfigService;
 import org.apache.skywalking.oap.server.core.storage.IBatchDAO;
 import org.apache.skywalking.oap.server.core.storage.IHistoryDeleteDAO;
 import org.apache.skywalking.oap.server.core.storage.StorageBuilderFactory;
@@ -171,10 +170,6 @@ public class H2StorageProvider extends ModuleProvider {
 
     @Override
     public void start() throws ServiceNotProvidedException, ModuleStartException {
-        final ConfigService configService = getManager().find(CoreModule.NAME)
-                                                        .provider()
-                                                        .getService(ConfigService.class);
-
         MetricsCreator metricCreator = getManager().find(TelemetryModule.NAME)
                                                    .provider()
                                                    .getService(MetricsCreator.class);

oap-server/server-storage-plugin/storage-jdbc-hikaricp-plugin/src/main/java/org/apache/skywalking/oap/server/storage/plugin/jdbc/mysql/MySQLStorageProvider.java

@@ -20,7 +20,6 @@ package org.apache.skywalking.oap.server.storage.plugin.jdbc.mysql;
 
 import lombok.extern.slf4j.Slf4j;
 import org.apache.skywalking.oap.server.core.CoreModule;
-import org.apache.skywalking.oap.server.core.config.ConfigService;
 import org.apache.skywalking.oap.server.core.storage.IBatchDAO;
 import org.apache.skywalking.oap.server.core.storage.IHistoryDeleteDAO;
 import org.apache.skywalking.oap.server.core.storage.StorageBuilderFactory;
@@ -157,10 +156,6 @@ public class MySQLStorageProvider extends ModuleProvider {
 
     @Override
     public void start() throws ServiceNotProvidedException, ModuleStartException {
-        final ConfigService configService = getManager().find(CoreModule.NAME)
-                                                        .provider()
-                                                        .getService(ConfigService.class);
-
         try {
             mysqlClient.connect();
 

oap-server/server-storage-plugin/storage-jdbc-hikaricp-plugin/src/main/java/org/apache/skywalking/oap/server/storage/plugin/jdbc/postgresql/PostgreSQLStorageProvider.java

@@ -19,9 +19,7 @@
 package org.apache.skywalking.oap.server.storage.plugin.jdbc.postgresql;
 
 import lombok.extern.slf4j.Slf4j;
-import org.apache.skywalking.oap.server.core.Const;
 import org.apache.skywalking.oap.server.core.CoreModule;
-import org.apache.skywalking.oap.server.core.config.ConfigService;
 import org.apache.skywalking.oap.server.core.storage.IBatchDAO;
 import org.apache.skywalking.oap.server.core.storage.IHistoryDeleteDAO;
 import org.apache.skywalking.oap.server.core.storage.StorageBuilderFactory;
@@ -157,11 +155,6 @@ public class PostgreSQLStorageProvider extends ModuleProvider {
 
     @Override
     public void start() throws ServiceNotProvidedException, ModuleStartException {
-        final ConfigService configService = getManager().find(CoreModule.NAME)
-                .provider()
-                .getService(ConfigService.class);
-        final int numOfSearchableTags = configService.getSearchableTracesTags().split(Const.COMMA).length;
-
         try {
             postgresqlClient.connect();