releng: Use org.eclipse.remote plugins instead of the feature

releng: Use org.eclipse.remote plugins instead of the feature

The top-level feature now includes the doc.isv plugin, which
in turn depends on all org.eclipse.remote features (serial,
telnet, etc.) which we don't need.

Depend directly on the plugins instead.

Change-Id: Iac7eb44d75b0db46549cdc6d3cfe027e504a95bc
Signed-off-by: Alexandre Montplaisir <alexmonthy@efficios.com>
Reviewed-on: https://git.eclipse.org/r/69298
Reviewed-by: Marc-Andre Laperle <marc-andre.laperle@ericsson.com>
Tested-by: Marc-Andre Laperle <marc-andre.laperle@ericsson.com>
Reviewed-by: Hudson CI