Remove dedicated org.apache.commons.logging from target definition

The org.apache.commons.logging bundle has been added to the target
definition with a dedicated version 1.2.0.v20180409-1502 from the Orbit
p2 repository.

Switch back to the main one again, and use the one provided by Eclipse
Platform and chosen by p2.

Change-Id: I64a6d4e5b62e485fb4417272ad58fdd04fe8b659
Signed-off-by: Markus Knauer <mknauer@eclipsesource.com>
diff --git a/releng/org.eclipse.rap.tools.build/target.definition/org.eclipse.rap.tools.target.definition.target b/releng/org.eclipse.rap.tools.build/target.definition/org.eclipse.rap.tools.target.definition.target
index 6a4a4e6..370c8bf 100644
--- a/releng/org.eclipse.rap.tools.build/target.definition/org.eclipse.rap.tools.target.definition.target
+++ b/releng/org.eclipse.rap.tools.build/target.definition/org.eclipse.rap.tools.target.definition.target
@@ -33,9 +33,5 @@
 <unit id="org.eclipse.license.feature.group" version="1.0.1.v20140414-1359"/>
 <repository location="http://download.eclipse.org/cbi/updates/license/"/>
 </location>
-<location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="slicer" includeSource="true" type="InstallableUnit">
-<unit id="org.apache.commons.logging" version="1.2.0.v20180409-1502"/>
-<repository location="http://download.eclipse.org/tools/orbit/downloads/drops/R20180905201904/repository/"/>
-</location>
 </locations>
 </target>