remove "--install-optional-packages" from tutorials/documentation, it creates too much trouble on the mailing list

HowtoconnectCOTSUEtoOAIeNBviaRRHGW.md

@@ -183,8 +183,8 @@ openairinterface5g: The location of openairinterface5g repository.
 cd ~/openairinterface
 source oaienv
 cd cmake_targets
-./build_oai -I -g --RRH --install-system-files -w USRP -t ETHERNET --install-optional-packages      #for USRP
-./build_oai -I -g --RRH --install-system-files -w BLADERF -t ETHERNET --install-optional-packages   #for BladeRF
+./build_oai -I -g --RRH --install-system-files -w USRP -t ETHERNET      #for USRP
+./build_oai -I -g --RRH --install-system-files -w BLADERF -t ETHERNET   #for BladeRF
 ```
 
 You can print out the help message to see what these options mean using the command "./build_oai -h". A short summary is as follows.
@@ -195,7 +195,6 @@ You can print out the help message to see what these options mean using the comm
    * --install-system-files: installs OAI required files in Linux system.
    * -w: adds the hardware support, which is USRP in our case.
    * -t: adds fronthaul transport protocol support (currently only ETHERNET is supported)
-   * --install-optional-packages: Installs optional packages
 
 __Notes:__
    * If you have previously build OAI on your host, please use -c or -C to remove existing compiled files.
@@ -258,7 +257,7 @@ openairinterface5g: The location of openairinterface5g repository.
 cd ~/openairinterface
 source oaienv
 cd cmake_targets
-./build_oai -I -g --eNB -x --install-system-files -w None -t ETHERNET --install-optional-packages
+./build_oai -I -g --eNB -x --install-system-files -w None -t ETHERNET
 ```
 
 You can print out the help message to see what these options mean using the command "./build_oai -h". A short summary is as follows.
@@ -270,7 +269,6 @@ You can print out the help message to see what these options mean using the comm
    * --install-system-files: installs OAI required files in Linux system.
    * -w: adds the hardware support, which is None in our case (radio hardware support is associated with RRH GW).
    * -t: adds fronthaul transport protocol support (currently only ETHERNET is supported)
-   * --install-optional-packages: Installs optional packages
 
 __Notes:__
    * If you have previously build OAI on your host, please use -c or -C to remove existing compiled files.