Remove specific directory for LTE SIM management tools

Move into openair3/NAS/TOOLS/CMakeLists.txt, and simplify the
CMakeLists.txt.

Co-authored-by: Robert Schmidt <robert.schmidt@openairinterface.org>

cmake_targets/build_oai

@@ -244,7 +244,7 @@ function main() {
             shift;;
        --UE)
             UE=1
-            TARGET_LIST="$TARGET_LIST lte-uesoftmodem"
+            TARGET_LIST="$TARGET_LIST lte-uesoftmodem conf2uedata usim nvram"
             echo_info "Will compile UE"
             shift;;
        --nrUE)
@@ -513,18 +513,7 @@ function main() {
     fi
 
     if [ "$UE" = 1 ] ; then
-
-      echo_info "Compiling UE specific part"
-
-      [ "$CLEAN" = "1" ] && rm -rf $DIR/nas_sim_tools/build
-      mkdir -p $DIR/nas_sim_tools/build
-      cd $DIR/nas_sim_tools/build
-
-      ${CMAKE_CMD% *} ..
-      compilations nas_sim_tools usim.txt "usim" "${BUILD_TOOL_OPT}"
-      compilations nas_sim_tools nvram.txt "nvram" "${BUILD_TOOL_OPT}"
-      compilations nas_sim_tools conf2uedata.txt "conf2uedata" "${BUILD_TOOL_OPT}"
-
+      echo_info "Generate LTE USIM default sim content UE specific part"
       # generate USIM data
       if [ -f conf2uedata ]; then
         install_nas_tools $conf_nvram_path $DIR/$BUILD_DIR/build "$DIR/$BUILD_DIR/build/conf2uedata.txt"