Remove redundant annotations when applying 'default annotation'

[stylismo]

When a default annotation like @ParamsAreNonnullByDefault is added to package-info.java, the existing @Nonnull annotations on the parameters of all methods of all classes in that package should be removed.

This should not be limited to @Nonnull but instead all configured annotations of that kind, e.g. @NotNull

The element types used in the default annotation being applied to the package should be considered when removing redundant annotations.

For example when a project uses the following default annotation and the user applies this to the current package:

@Documented
@Nonnull
@TypeQualifierDefault({
        ElementType.FIELD,
        ElementType.METHOD,
        ElementType.PARAMETER,
})
@Retention(java.lang.annotation.RetentionPolicy.RUNTIME)
public @interface NonnullByDefault {
}

Then all redundant @Nonnull annotations should be removed from fields, methods and parameters in that package.

[stylismo]

Applying a 'default' annotation to the package with removal of redundant annotations enabled.

Before

After