system/qemu: Kill static libusb support (not needed with 14.2)

Signed-off-by: Robby Workman <rworkman@slackbuilds.org>

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

system/qemu/README

@@ -39,6 +39,3 @@ If you wish to emulate ARM, you will want device-tree-compiler.
 NOTES:
   This version breaks some backward compatibility with earlier versions.
   Consult the official changelogs for details.
-
-  Slackware's libusb is too old. Thus, to enable usb redirection, install
-  usbredir, download libusb-1.19, and build with LIBUSB=yes ./qemu.SlackBuild

system/qemu/qemu.SlackBuild

@@ -54,7 +54,6 @@ KVMGROUP=${KVMGROUP:-users}
 TARGETS=${TARGETS:-some}
 VNC_ENABLE=${VNC_ENABLE:-yes}
 AUDIODRIVERS=${AUDIODRIVERS:-alsa,oss,sdl}
-LIBUSB=${LIBUSB:-no}
 
 if [ -z "$ARCH" ]; then
   case "$( uname -m )" in
@@ -122,26 +121,6 @@ else
   with_vnc="--disable-vnc"
 fi
 
-# Build libusb-1.0.19 statically so that usb passthrough will work;
-# not needed if you upgrade the default libdir.
-USBSTATIC=""
-if [ "$LIBUSB" = "yes" ]; then
-  tar xf $CWD/libusb-1.0.19.tar.xz
-  cd libusb-1.0.19
-  CFLAGS="$SLKCFLAGS" \
-  ./configure \
-    --prefix=$TMP/$PRGNAM-$VERSION/libusb-static \
-    --build=$ARCH-slackware-linux \
-    --disable-shared \
-    --enable-static
-  make install
-  cd ..
-  sed -i 's/--cflags libusb-1.0/\0 --static/' configure
-  sed -i 's/--libs libusb-1.0/\0 --static/' configure
-  USBSTATIC="$TMP/$PRGNAM-$VERSION/libusb-static/lib/pkgconfig"
-fi
-
-PKG_CONFIG_PATH+="${USBSTATIC}" \
 CFLAGS="$SLKCFLAGS" \
 CXXFLAGS="$SLKCFLAGS" \
 ./configure \

system/qemu/qemu.info

@@ -1,10 +1,8 @@
 PRGNAM="qemu"
 VERSION="2.5.0"
 HOMEPAGE="http://wiki.qemu.org/Main_Page"
-DOWNLOAD="http://wiki.qemu-project.org/download/qemu-2.5.0.tar.bz2 \
-          http://harrier.slackbuilds.org/misc/libusb-1.0.19.tar.xz"
-MD5SUM="f469f2330bbe76e3e39db10e9ac4f8db \
-        30fcf0865e8945a39d7d136f907e933c"
+DOWNLOAD="http://wiki.qemu-project.org/download/qemu-2.5.0.tar.bz2"
+MD5SUM="f469f2330bbe76e3e39db10e9ac4f8db"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
 REQUIRES=""