dev-tools: Remove no longer needed openvpn-plugin.h.in patching

The bug in uncrustify 0.64 is no longer causing us issues as we now
require at least v0.72.

This workaround was added as part of the initial reformat-all inclusion,
in commit 2417d55.

Signed-off-by: David Sommerseth <davids@openvpn.net>
Acked-by: Gert Doering <gert@greenie.muc.de>
Message-Id: <20220420121322.42732-1-openvpn@sf.lists.topphemmelig.net>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg24122.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>

Author: dsommers

dev-tools/reformat-patches/after_include_openvpn-plugin.h.in.patch

@@ -1,4 +1,3 @@
 E:doc/doxygen/doc_key_generation.h     # @verbatim section gets mistreated, exclude it
 E:src/compat/compat-lz4.c              # Preserve LZ4 upstream formatting
 E:src/compat/compat-lz4.h              # Preserve LZ4 upstream formatting
-P:include/openvpn-plugin.h.in          # uncrustify segfaults, patch it before+after