removed outdated nightly build links

Change-Id: I02bc523365ec8820a258c47402254a536b812824
Signed-off-by: Ralph Soika <ralph.soika@imixs.com>
diff --git a/downloads.php b/downloads.php
index 19fcfb5..50c0ea9 100644
--- a/downloads.php
+++ b/downloads.php
@@ -30,16 +30,12 @@
 
 
 <h3>Eclipse 4.12 (2019-06)</h3>
-<p><b>Nightly Build</b><br />		
-<p><a href="http://download.eclipse.org/bpmn2-modeler/updates/nightly/2019-06/">http://download.eclipse.org/bpmn2-modeler/updates/nightly/2019-06/</a>
 <p><b>Update Sites</b><br />		
 <p><b>1.5.2:</b> <a href="http://download.eclipse.org/bpmn2-modeler/updates/2019-06/1.5.2">http://download.eclipse.org/bpmn2-modeler/updates/2019-06/1.5.2</a>
 <p><b>1.5.1:</b> <a href="http://download.eclipse.org/bpmn2-modeler/updates/2019-06/1.5.1">http://download.eclipse.org/bpmn2-modeler/updates/2019-06/1.5.1</a>
 
 
 <h3>Eclipse 4.8 (Photon)</h3>
-<p><b>Nightly Build</b><br />		
-<p><a href="http://download.eclipse.org/bpmn2-modeler/updates/nightly/photon/">http://download.eclipse.org/bpmn2-modeler/updates/nightly/photon/</a>
 <p><b>Update Sites</b><br />		
 <p><b>1.5.1:</b> <a href="http://download.eclipse.org/bpmn2-modeler/updates/photon/1.5.1">http://download.eclipse.org/bpmn2-modeler/updates/photon/1.5.1</a>
 <p><b>1.5.0:</b> <a href="http://download.eclipse.org/bpmn2-modeler/updates/photon/1.5.0">http://download.eclipse.org/bpmn2-modeler/updates/photon/1.5.0</a>
@@ -47,8 +43,6 @@
 
 
 <h3>Eclipse 4.7 (Oxygen)</h3>
-<p><b>Nightly Build</b><br />		
-<p><a href="http://download.eclipse.org/bpmn2-modeler/updates/nightly/oxygen/">http://download.eclipse.org/bpmn2-modeler/updates/nightly/oxygen/</a>
 <p><b>Update Sites</b><br />		
 <p><b>1.4.3:</b> <a href="http://download.eclipse.org/bpmn2-modeler/updates/oxygen/1.4.3">http://download.eclipse.org/bpmn2-modeler/updates/oxygen/1.4.3</a>
 <p><b>1.4.2:</b> <a href="http://download.eclipse.org/bpmn2-modeler/updates/oxygen/1.4.2">http://download.eclipse.org/bpmn2-modeler/updates/oxygen/1.4.2</a>