package/opencv3: regenerate patch without renames

Patch using renames are not properly handled by patch < 2.7, which
some users (including autobuilder instances) might be using. Such
renames are silently ignored by old patch versions, caused strange
build failures due to the missed renames.

This patch fixes this by regenerating the patch without renames.

Fixes:

  http://autobuild.buildroot.net/results/347d8fd2e286b3e4e5e18743e64d862bdb66dbb9/



Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>