delete files with GPL License + modify build scripts

cmake_targets/CMakeLists.txt

common/utils/T/tracer/packet-mac-lte.h

openair2/DOCS/TEMPLATES/README/Readme.doxy

...RM_4_RRC_LITE/src/foreign/sockets-2.3.9.4/Ajp13Socket.cpp

.../RRM_4_RRC_LITE/src/foreign/sockets-2.3.9.4/Ajp13Socket.h

..._4_RRC_LITE/src/foreign/sockets-2.3.9.4/AjpBaseSocket.cpp

...RM_4_RRC_LITE/src/foreign/sockets-2.3.9.4/AjpBaseSocket.h

...ir2/RRM_4_RRC_LITE/src/foreign/sockets-2.3.9.4/Base64.cpp

openair2/RRM_4_RRC_LITE/src/foreign/sockets-2.3.9.4/Base64.h

...air2/RRM_4_RRC_LITE/src/foreign/sockets-2.3.9.4/Changelog

...air2/RRM_4_RRC_LITE/src/foreign/sockets-2.3.9.4/Debug.cpp

openair2/RRM_4_RRC_LITE/src/foreign/sockets-2.3.9.4/Debug.h

...air2/RRM_4_RRC_LITE/src/foreign/sockets-2.3.9.4/Event.cpp

openair2/RRM_4_RRC_LITE/src/foreign/sockets-2.3.9.4/Event.h

...M_4_RRC_LITE/src/foreign/sockets-2.3.9.4/EventHandler.cpp

...RRM_4_RRC_LITE/src/foreign/sockets-2.3.9.4/EventHandler.h

.../RRM_4_RRC_LITE/src/foreign/sockets-2.3.9.4/EventTime.cpp

...r2/RRM_4_RRC_LITE/src/foreign/sockets-2.3.9.4/EventTime.h

.../RRM_4_RRC_LITE/src/foreign/sockets-2.3.9.4/Exception.cpp

...r2/RRM_4_RRC_LITE/src/foreign/sockets-2.3.9.4/Exception.h