spec: sections: target-vocabulary: RelativePathSource is now in Core

spec/section/target-vocabulary.md

@@ -106,32 +106,6 @@ If unspecified, the default value is UTF-8.
 This namespace is NOT limited to the listed compression formats 
 and MAY be extended in the future.
 
-#### Relative paths
-
-Relative paths to files are covered by a target access description included
-in this specification which subclasses `rml:Target` as `rml:RelativePathTarget`.
-This access description allows accessing files relative from:
-
-- `rml:CurrentWorkingDirectory`: relative to the current working directory of the RML processor.
-- `rml:MappingDirectory`: relative to the location of the RML mapping.
-- A string Literal: a string describing an absolute path against which relative paths are resolved, similar to the Base URI in [RFC3986](https://www.rfc-editor.org/rfc/rfc3986).
-
-If `rml:root` is not specified, it defaults to `rml:CurrentWorkingDirectory`.
-
-| Property    | Domain                    | Range                                                              |
-| ----------- | ------------------------- | ------------------------------------------------------------------ |
-| `rml:root`  | `rml:RelativePathSource`  | `rml:CurrentWorkingDirectory`, `rml:MappingDirectory` or `Literal` |
-| `rml:path`  | `rml:RelativePathSource`  | `Literal`                                                          |
-
-<pre class="ex-source">
-&lt;#RelativePathCWD&gt; a rml:LogicalTarget;
-  rml:target [ a rml:RelativePathTarget, rml:Target;
-    rml:root rml:CurrentWorkingDirectory;
-    rml:path "./file.ttl";
-  ];
-.
-</pre>
-
 ### Examples {#target-examples}
 
 The following example show a Target of an RDF dump in Turtle [[Turtle]]