iar-docker-images: remove useless code

Signed-off-by: Arthur She <arthur.she@linaro.org>
Change-Id: Ib429ae480152c75f5604cb20bacdd6de049bbd52
diff --git a/iar-docker-images/builders.sh b/iar-docker-images/builders.sh
index 5b1b248..4fd4a20 100755
--- a/iar-docker-images/builders.sh
+++ b/iar-docker-images/builders.sh
@@ -35,14 +35,11 @@
     cp /home/arthur.she/toolchain/* .
 fi
 
-
-
 image=$(dirname $(find . -name build.sh))
 test -d $image  && test -f $image/build.sh && \
 (
     echo "=== Building image: $image  ==="
     set -ex
-    touch /tmp/dckr-img-err
     cd $image
     ./build.sh --build-arg IAR_LIC_NR=${IAR_LICENSE_NR} --build-arg IAR_LIC_EMAIL=${IAR_LICENSE_EMAIL} --build-arg IAR_PACKAGE=${IAR_PACKAGE}
     [ -f ".docker-tag" ] && tag=$(cat .docker-tag) || (echo "Docker image built failed!"; exit 1)
@@ -50,8 +47,3 @@
     docker push $tag
     rm -f /tmp/dckr-img-err
 )
-
-if [ -f /tmp/dckr-img-err ]; then
-    was_error=1
-    echo "ERROR building image: ${image}"
-fi