[rdkb][common][app][Refactor ppp bbappend]

[Description]
Refactor ppp bbappend
1. remove support ipc patch file, it will make pppd lock without ppp mananger service

[Release-log]

diff --git a/recipes-connectivity/ppp/ppp_2.4.8.bbappend b/recipes-connectivity/ppp/ppp_2.4.8.bbappend
index a5b167b..23826c4 100644
--- a/recipes-connectivity/ppp/ppp_2.4.8.bbappend
+++ b/recipes-connectivity/ppp/ppp_2.4.8.bbappend
@@ -1,3 +1,7 @@
 DEPENDS_remove = "virtual/crypt"
 DEPENDS_append = " nanomsg"
 DEPENDS_append_broadband_dunfell = " libxcrypt"
+
+SRC_URI_remove = "${@bb.utils.contains('DISTRO_FEATURES', 'rdkb_xdsl_ppp_manager', ' ', 'file://ipc-event.patch', d)}"
+SRC_URI_remove = "${@bb.utils.contains('DISTRO_FEATURES', 'rdkb_xdsl_ppp_manager', ' ', 'file://ppp-remote-local-samelinklocaladdresses-fix.patch', d)}"
+SRC_URI_remove = "${@bb.utils.contains('DISTRO_FEATURES', 'rdkb_xdsl_ppp_manager', ' ', 'file://ppp-sessionBW-authProtocol-ACName-LastConnErr-DM-Impl.patch', d)}"