harmonize build_oai -c/-C

Both do practically the same. Harmonize them into one while guaranteeing
backwards compatibility.
Signed-off-by: Robert Schmidt <robert.schmidt@openairinterface.org>

cmake_targets/build_oai

@@ -130,12 +130,9 @@ function main() {
        --build-tool-opt)
             BUILD_TOOL_OPT+=" $2"
             shift 2;;
-       -c | --clean)
+       -c | --clean | -C | --clean-all)
             CLEAN=1
             shift;;
-       -C | --clean-all)
-            CLEAN_ALL=1
-            shift;;
        --clean-kernel)
             clean_kernel
             echo_info "Erased iptables config and removed modules from kernel"
@@ -382,10 +379,8 @@ function main() {
 
   echo "OPENAIR_DIR    = $OPENAIR_DIR"
 
-  if [ "$CLEAN_ALL" = "1" ] ; then
-    clean_all_files
-    echo "Erased all previously producted files"
-  fi
+  DIR=$OPENAIR_DIR/cmake_targets
+  [ "$CLEAN" = "1" ] && rm -rf "$DIR/$BUILD_DIR"
 
   if [ "$INSTALL_EXTERNAL" = "1" ] ; then
     echo_info "Installing packages"
@@ -418,10 +413,6 @@ function main() {
     check_install_additional_tools
   fi
 
-  DIR=$OPENAIR_DIR/cmake_targets
-
-  [ "$CLEAN" = "1" ] && rm -rf $DIR/$BUILD_DIR/build
-
   if [[ $TARGET_LIST != "" ]] && [[ -f $OPENAIR_DIR/CMakeLists.txt ]]; then
     # add some default libraries that should always be built
     # for eNB, gNB, UEs, simulators

cmake_targets/tools/build_helper

@@ -140,12 +140,6 @@ clean_kernel() {
     echo_info "Flushed iptables"
 }
 
-clean_all_files() {
- set_openair_env
- dir=$OPENAIR_DIR/cmake_targets
- rm -rf $dir/ran_build $dir/ran_build_noLOG
-}
-
 ############################################
 # External packages installers
 ############################################