Remove package import for javax.servlet.http from org.eclipse.jgit

This package import is unused.

Change-Id: I9f202bb3162736a1ef8054516f1a3145d3a7bb9b
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit/META-INF/MANIFEST.MF

@@ -151,7 +151,6 @@ Import-Package: com.googlecode.javaewah;version="[1.1.6,2.0.0)",
  com.jcraft.jsch;version="[0.1.37,0.2.0)",
  javax.crypto,
  javax.net.ssl,
- javax.servlet.http;version="[2.5.0,3.2.0)",
  org.slf4j;version="[1.7.0,2.0.0)",
  org.xml.sax,
  org.xml.sax.helpers