chore: remove deprecated methods and unused classes

wrapper/src/main/java/software/amazon/jdbc/PartialPluginService.java

@@ -220,13 +220,6 @@ public ConnectionProvider getDefaultConnectionProvider() {
     return this.connectionProviderManager.getDefaultProvider();
   }
 
-  @Deprecated
-  public boolean isPooledConnectionProvider(HostSpec host, Properties props) {
-    final ConnectionProvider connectionProvider =
-        this.connectionProviderManager.getConnectionProvider(this.driverProtocol, host, props);
-    return (connectionProvider instanceof PooledConnectionProvider);
-  }
-
   @Override
   public String getDriverProtocol() {
     return this.driverProtocol;

wrapper/src/main/java/software/amazon/jdbc/PluginService.java

@@ -234,9 +234,6 @@ Connection forceConnect(
 
   ConnectionProvider getDefaultConnectionProvider();
 
-  @Deprecated
-  boolean isPooledConnectionProvider(HostSpec host, Properties props);
-
   String getDriverProtocol();
 
   Properties getProperties();

wrapper/src/main/java/software/amazon/jdbc/PluginServiceImpl.java

@@ -250,13 +250,6 @@ public ConnectionProvider getDefaultConnectionProvider() {
     return this.connectionProviderManager.getDefaultProvider();
   }
 
-  @Deprecated
-  public boolean isPooledConnectionProvider(HostSpec host, Properties props) {
-    final ConnectionProvider connectionProvider =
-        this.connectionProviderManager.getConnectionProvider(this.driverProtocol, host, props);
-    return (connectionProvider instanceof PooledConnectionProvider);
-  }
-
   @Override
   public String getDriverProtocol() {
     return this.driverProtocol;

wrapper/src/main/java/software/amazon/jdbc/plugin/readwritesplitting/ReadWriteSplittingPlugin.java

@@ -295,7 +295,7 @@ private void setWriterConnection(final Connection writerConnection,
 
   private void setReaderConnection(final Connection conn, final HostSpec host) {
     closeReaderConnectionIfIdle(this.readerConnection);
-    this.readerConnection = new CacheItem<>(conn, this.getKeepAliveTimeout(host));
+    this.readerConnection = new CacheItem<>(conn, this.getKeepAliveTimeout(this.isReaderConnFromInternalPool));
     this.readerHostSpec = host;
     LOGGER.finest(
         () -> Messages.get(
@@ -534,8 +534,8 @@ private boolean isConnectionUsable(final Connection connection) throws SQLExcept
     return connection != null && !connection.isClosed();
   }
 
-  private long getKeepAliveTimeout(final HostSpec host) {
-    if (this.pluginService.isPooledConnectionProvider(host, properties)) {
+  private long getKeepAliveTimeout(boolean isPooledConnection) {
+    if (isPooledConnection) {
       // Let the connection pool handle the lifetime of the reader connection.
       return 0;
     }

wrapper/src/main/resources/aws_advanced_jdbc_wrapper_messages.properties

@@ -404,7 +404,6 @@ ClusterTopologyMonitorImpl.reset=Reset: clusterId={0}, host={1}
 ClusterTopologyMonitorImpl.resetEventReceived=MonitorResetEvent received.
 
 # Blue/Green Deployment
-bgd.inProgressConnectionClosed=Connection has been closed since Blue/Green switchover is in progress.
 bgd.inProgressHoldConnect=Blue/Green Deployment switchover is in progress. The  ''connect'' call will be delayed until switchover is completed.
 bgd.inProgressTryConnectLater=Blue/Green Deployment switchover is still in progress after {0} ms. Try to connect again later.
 bgd.switchoverCompleteContinueWithConnect=Blue/Green Deployment switchover is completed. Continue with connect call. The call was held for {0} ms.