doc: remove residual template from release notes
doc: remove residual template from release notes

Fixes: b0641b68286d ("doc: fix release notes for 16.04")

Signed-off-by: Thomas Monjalon <ee2fa8b2681c737f775687e475dcbf2028a412f1@6wind.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk