push doc: remove confusing mention of remote merger

Saying that "git push <remote> <src>:<dst>" won't push a merger of <src> and <dst> to <dst> is clear from the rest of the context here, so mentioning it is redundant, furthermore the mention of "EXAMPLES below" isn't specific or useful. This phrase was originally added in 149f6ddfb3 ("Docs: Expand explanation of the use of + in git push refspecs.", 2009-02-19), as can be seen in that change the point of the example being cited was to show that force pushing can leave unreferenced commits on the remote. It's enough that we explain that in its own section, it doesn't need to be mentioned here. Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>