qmake5_base: use remove-libtool bbclass

* this requires latest oe-core (Yocto 2.1), if you want to use latest
  meta-qt5 with older oe-core, you need to backport this bbclass
  and more importantly don't forget to provide
  EXTRA_CONF_PACKAGECONFIG

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

classes/qmake5_base.bbclass

@@ -47,7 +47,7 @@ OE_QMAKE_WAYLAND_SCANNER = "${STAGING_BINDIR_NATIVE}/wayland-scanner"
 # this one needs to be exported, because qmake reads it from shell env
 export QT_CONF_PATH = "${WORKDIR}/qt.conf"
 
-inherit qmake5_paths
+inherit qmake5_paths remove-libtool
 
 do_generate_qt_config_file() {
     cat > ${QT_CONF_PATH} <<EOF
@@ -168,7 +168,6 @@ qmake5_base_nativesdk_do_install() {
     find . -name "Makefile*" | xargs -r sed -i "s,(INSTALL_ROOT)${STAGING_DIR_HOST},(INSTALL_ROOT),g"
 
     oe_runmake install INSTALL_ROOT=${D}
-    find "${D}" -ignore_readdir_race -name "*.la" -delete
 }
 
 qmake5_base_do_install() {
@@ -176,7 +175,6 @@ qmake5_base_do_install() {
     find . -name "Makefile*" | xargs -r sed -i "s,(INSTALL_ROOT)${STAGING_DIR_TARGET},(INSTALL_ROOT),g"
 
     oe_runmake install INSTALL_ROOT=${D}
-    find "${D}" -ignore_readdir_race -name "*.la" -delete
 
     # everything except HostData and HostBinaries is prefixed with sysroot value,
     # but we cannot remove sysroot override, because that's useful for pkg-config etc