Adds Compiler Warning to useless @Inject

Now will warn when the `@inject` annotation is not needed

Author: SentryMan

inject-generator/src/main/java/io/avaje/inject/generator/SimpleBeanProxyWriter.java

@@ -55,7 +55,6 @@ private void writeFields() {
   }
 
   private void writeConstructor() {
-    writer.append("  @Inject\n");
     writer.append("  public %s%s(", shortName, suffix);
     int count = 0;
     for (final String aspectName : aspects.aspectNames()) {
@@ -96,7 +95,6 @@ private void writeImports() {
     writer.append("import %s;", Constants.INVOCATION_EXCEPTION).eol();
     writer.append("import %s;", Constants.METHOD_INTERCEPTOR).eol();
     writer.append("import %s;", Constants.COMPONENT).eol();
-    writer.append("import %s;", Constants.INJECT).eol();
     writer.append("import %s;", Constants.PROXY).eol();
     beanReader.writeImports(writer, packageName);
   }

inject-generator/src/main/java/io/avaje/inject/generator/TypeExtendsInjection.java

@@ -59,6 +59,11 @@ void read(TypeElement type) {
           break;
       }
     }
+    if (injectConstructor != null
+        && otherConstructors.isEmpty()
+        && InjectPrism.isPresent(injectConstructor.element())) {
+      logWarn(injectConstructor.element(), "Remove Unused @Inject Annotation");
+    }
   }
 
   /** Read the annotations on the type. */