diff --git a/t/artificial/xip2/constituency.xml b/t/artificial/xip2/constituency.xml
deleted file mode 100644
index 7db3ada..0000000
--- a/t/artificial/xip2/constituency.xml
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diff --git a/t/artificial/xip2/dependency.xml b/t/artificial/xip2/dependency.xml
deleted file mode 100644
index af50dc8..0000000
--- a/t/artificial/xip2/dependency.xml
+++ /dev/null
@@ -1,85 +0,0 @@
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diff --git a/t/artificial/xip2/morpho.xml b/t/artificial/xip2/morpho.xml
deleted file mode 100644
index 72eeec0..0000000
--- a/t/artificial/xip2/morpho.xml
+++ /dev/null
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-            <f name="lemma">werden</f>
-            <f name="pos">VERB</f>
-          </fs>
-        </f>
-      </fs>
-    </span>
-    <span from="129" id="s2_n38" to="130">
-      <fs type="lex" xmlns="http://www.tei-c.org/ns/1.0">
-        <f name="lex">
-          <fs>
-            <f name="lemma">.</f>
-            <f name="pos">PUNCT</f>
-          </fs>
-        </f>
-      </fs>
-    </span>
-  </spanList>
-</layer>
diff --git a/t/artificial/xip2/sentences.xml b/t/artificial/xip2/sentences.xml
deleted file mode 100644
index 18e7dbc..0000000
--- a/t/artificial/xip2/sentences.xml
+++ /dev/null
@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<?xml-model href="span.rng" type="application/xml" schematypens="http://relaxng.org/ns/structure/1.0"?>
-<layer docid="A01_APR.13047" version="KorAP-0.4" xmlns="http://ids-mannheim.de/ns/KorAP">
-  <spanList> 
-    <span from="0" to="130" />
-  </spanList>
-</layer>