chore(doc): basic-based tutorials only in HTTP/2

Work done:

• Making all basic deployments use HTTP/2 only
• Removed all non-nrf basic deployments

Related MRs:

• Found an issue in AMF: oai-cn5g-amf!212 (merged)
• Thinh fixed an issue in UDR: oai-cn5g-udr!41 (merged)
• Using PCF MR for HTTP/2: oai-cn5g-pcf!29 (merged)
• Using SMF MR for HTTP/2 fix w/ PCF: oai-cn5g-smf!200 (merged)

docker-compose/docker-compose-basic-nrf.yaml

@@ -155,9 +155,9 @@ services:
             - SMF_FQDN_0=oai-smf
             - SMF_IPV4_ADDR_0=192.168.70.133
             - SELECTED_0=true
-            - SMF_HTTP_VERSION_0=v2
             - NF_REGISTRATION=yes
             - USE_FQDN_DNS=yes
+            - SMF_SELECTION=yes
             - EXTERNAL_AUSF=yes
             - EXTERNAL_UDM=no
             - EXTERNAL_NSSF=no
@@ -203,7 +203,6 @@ services:
             - USE_LOCAL_SUBSCRIPTION_INFO=yes  #Set to yes if SMF uses local subscription information instead of from an UDM
             - REGISTER_NRF=yes
             - DISCOVER_UPF=yes
-            - SMF_SELECTION=yes
             - USE_FQDN_DNS=yes
             # changes for HTTP2
             - HTTP_VERSION=2