chore: resolve obsolete Binding#getDisplayString (apache#2429)

Co-authored-by: Vincent Potucek <[email protected]>

Author: Pankraz76

impl/maven-di/src/main/java/org/apache/maven/di/impl/Binding.java

@@ -31,8 +31,6 @@
 
 import org.apache.maven.di.Key;
 
-import static java.util.stream.Collectors.joining;
-
 public abstract class Binding<T> {
     private final Set<Dependency<?>> dependencies;
     private Annotation scope;
@@ -128,10 +126,6 @@ public Annotation getScope() {
         return scope;
     }
 
-    public String getDisplayString() {
-        return dependencies.stream().map(Dependency::getDisplayString).collect(joining(", ", "[", "]"));
-    }
-
     public Key<?> getOriginalKey() {
         return originalKey;
     }