Cleanup script and disable the JIT again

Change-Id: Iafac8de859633c07a69d3b6454511268ab3d1b8c
diff --git a/Tools/fuchsia/build_webkit.sh b/Tools/fuchsia/build_webkit.sh
index 4a8ea60..5b9cfe1 100755
--- a/Tools/fuchsia/build_webkit.sh
+++ b/Tools/fuchsia/build_webkit.sh
@@ -21,7 +21,6 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-clean_manifest=false
 update_prebuilts=false
 run_after_building=false
 build_dir=Debug
@@ -32,7 +31,7 @@
 
 set -e
 
-while getopts ":hcrufmpl" arg; do
+while getopts ":hcrumpl" arg; do
   case $arg in
     c) # Do a clean build
       clean_build=true
@@ -40,9 +39,6 @@
     m) # Clean CMake files
       clean_cmake=true
       ;;
-    f) # Clean manifest
-      clean_manifest=true
-      ;;
     r) # Run after building
       run_after_building=true
       ;;
@@ -50,7 +46,7 @@
       build_dir=Release
       build_flag=--release
       ;;
-    l)
+    l) # Update prebuilds.
       update_prebuilts=true
       ;;
     h | *) # Display help.
@@ -81,14 +77,11 @@
 JSC_STRIPPED=$WEBKIT_BUILD/bin/jsc_stripped
 
 $WEBKIT_ROOT/Tools/Scripts/build-webkit $build_flag --fuchsia \
+    --no-jit \
     --cmakeargs="-DCMAKE_TOOLCHAIN_FILE=$script_dir/FuchsiaClangToolchain.txt -DENABLE_XSLT=OFF -DENABLE_DRAG_SUPPORT=OFF -DENABLE_STATIC_JSC=ON"
 
 MANIFEST_FILE=$WEBKIT_BUILD/minibrowser_manifest.txt
 
-if [ $clean_manifest == true ] ; then
-  rm $MANIFEST_FILE
-fi
-
 cd $script_dir
 
 if [ $run_after_building == true ] ; then