ffmpeg: Remove --enable-nonfree & --enable-openssl

Building with either of these results in:

  This version of ffmpeg has nonfree parts compiled in.
  Therefore it is not legally redistributable."

Fixes #1087.

packages/ffmpeg/build.sh

@@ -2,13 +2,14 @@ TERMUX_PKG_HOMEPAGE=https://ffmpeg.org
 TERMUX_PKG_DESCRIPTION="Tools and libraries to manipulate a wide range of multimedia formats and protocols"
 # NOTE: mpv has to be rebuilt and version bumped after updating ffmpeg.
 TERMUX_PKG_VERSION=3.3.2
+TERMUX_PKG_REVISION=1
 TERMUX_PKG_SRCURL=https://www.ffmpeg.org/releases/ffmpeg-${TERMUX_PKG_VERSION}.tar.xz
 TERMUX_PKG_SHA256=1998de1ab32616cbf2ff86efc3f1f26e76805ec5dc51e24c041c79edd8262785
 TERMUX_PKG_FOLDERNAME=ffmpeg-$TERMUX_PKG_VERSION
 # libbz2 is used by matroska decoder:
 # libvpx is the VP8 & VP9 video encoder for WebM, see
 # https://trac.ffmpeg.org/wiki/Encode/VP8 and https://trac.ffmpeg.org/wiki/Encode/VP9
-TERMUX_PKG_DEPENDS="openssl, libbz2, libx264, libx265, xvidcore, libvorbis, libmp3lame, libopus, libvpx"
+TERMUX_PKG_DEPENDS="libbz2, libx264, libx265, xvidcore, libvorbis, libmp3lame, libopus, libvpx"
 TERMUX_PKG_INCLUDE_IN_DEVPACKAGE="share/ffmpeg/examples"
 TERMUX_PKG_CONFLICTS="libav"
 
@@ -58,8 +59,6 @@ termux_step_configure () {
 		--enable-libx265 \
 		--enable-libxvid \
 		--enable-libvpx \
-		--enable-nonfree \
-		--enable-openssl \
 		--enable-shared \
 		--prefix=$TERMUX_PREFIX \
 		--target-os=android \