fix the regressions blocking doxygen documentation generation

cmake_targets/build_oai

@@ -535,11 +535,6 @@ function main() {
       execlist="$execlist nr-uesoftmodem"
   fi
 
-  if [[ "$execlist" == "" && "$SIMUS_PHY" != "1" ]]; then
-    echo_success "installing dependencies successful"
-    exit
-  fi
-
   echo_info "3. building the compilation directives ..."
 
   DIR=$OPENAIR_DIR/cmake_targets
@@ -727,11 +722,7 @@ function main() {
     echo_info "Doxygen generation log is located here: $doxygen_log"
     echo_info "Generating Doxygen files....please wait"
     (
-    [ "$CLEAN" = "1" ] && rm -rf $OPENAIR_DIR/cmake_targets/doxygen/build
-    mkdir -p $OPENAIR_DIR/cmake_targets/doxygen/build
-    cd $OPENAIR_DIR/cmake_targets/doxygen/build
-    eval $CMAKE_CMD ..
-    make doc
+    $MAKE_CMD doc
     ) >& $doxygen_log
   fi