[fix] Remove use of deprecated code

Signed-off-by: Emmanuel Bigeon <emmanuel@bigeon.fr>

gclc-process/src/main/java/net/bigeon/gclc/process/io/ConnectingConsoleInput.java

@@ -72,20 +72,16 @@ import java.io.InterruptedIOException;
 import java.util.function.Supplier;
 
 import net.bigeon.gclc.manager.ConsoleInput;
-import net.bigeon.gclc.tools.ConstantString;
 
 /** A console input that can be connected to and diconnected from.
  * 
  * @author Emmanuel Bigeon */
 public final class ConnectingConsoleInput implements ConsoleInput {
 
-    /** The empty string provider. */
-    private static final ConstantString EMPTY_STRING = new ConstantString("");
-
     /** If the input is closed. */
     private boolean          close          = false;
     /** The prompt string. */
-    private Supplier<String> prompt         = EMPTY_STRING;
+    private Supplier<String> prompt         = () -> "";
     /** If the input is currently in prompting state.
      * <p>
      * To change it you should be in a promptLock. */
@@ -307,7 +303,7 @@ public final class ConnectingConsoleInput implements ConsoleInput {
      * @see fr.bigeon.gclc.manager.ConsoleInput#setPrompt(java.lang.String) */
     @Override
     public void setPrompt(final String prompt) {
-        this.prompt = new ConstantString(prompt);
+        this.prompt = () -> prompt;
     }
 
     /* (non-Javadoc)