Bug 568003: Temporarily disable Mylyn's SDK contribution

Mylyn's SDK feature depends on lucene.core 7.1.0, but that is no longer
part of Orbit. The AERI project was contributing it, so Mylyn was
picking it up from there. However as AERI is being removed from SimRel
Mylyn needs to either update to newer version or provide 7.1.0 itself
to SimRel.

Change-Id: Idc5c17f9ead21b8ec8305b1ab142aa1e79f30442
diff --git a/mylyn.aggrcon b/mylyn.aggrcon
index 20fd832..6be9cd3 100644
--- a/mylyn.aggrcon
+++ b/mylyn.aggrcon
@@ -54,7 +54,7 @@
     <features name="org.eclipse.mylyn.context.sdk.feature.group" versionRange="3.25.2.v20200828-1617"/>
     <features name="org.eclipse.mylyn.reviews.feature.feature.group" versionRange="2.16.1.v20200828-1618"/>
     <features name="org.eclipse.mylyn.reviews.sdk.feature.feature.group" versionRange="2.16.1.v20200828-1618"/>
-    <features name="org.eclipse.mylyn.sdk_feature.feature.group" versionRange="3.25.2.v20200814-0512"/>
+    <features name="org.eclipse.mylyn.sdk_feature.feature.group" versionRange="3.25.2.v20200814-0512" enabled="false"/>
     <features name="org.eclipse.mylyn.tasks.ide.feature.group" versionRange="3.25.2.v20200814-0512"/>
     <features name="org.eclipse.mylyn.versions.feature.group" versionRange="1.17.0.v20191002-0716"/>
     <features name="org.eclipse.mylyn.versions.sdk.feature.group" versionRange="1.17.0.v20191002-0716"/>