BZ:https://bugzilla.tianocore.org/show_bug.cgi?id=1929

Some Linux servers do not have BC installed,so errors occur.
So the judgment was changed to avoid this error.

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Zhiju.Fan <zhijux.fan@intel.com>
---
 edksetup.sh | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/edksetup.sh b/edksetup.sh
index c7b2e1e201..0723e7b85a 100755
--- a/edksetup.sh
+++ b/edksetup.sh
@@ -122,8 +122,7 @@ function SetupPython3()
         export PYTHON_COMMAND=$python
         continue
       fi
-      ret=`echo "$origin_version < $python_version" |bc`
-      if [ "$ret" -eq 1 ]; then
+      if [ "$origin_version" \< "$python_version" ]; then
         origin_version=$python_version
         export PYTHON_COMMAND=$python
       fi
@@ -165,8 +164,7 @@ function SetupPython()
         export PYTHON_COMMAND=$python
         continue
       fi
-      ret=`echo "$origin_version < $python_version" |bc`
-      if [ "$ret" -eq 1 ]; then
+      if [ "$origin_version" \< "$python_version" ]; then
         origin_version=$python_version
         export PYTHON_COMMAND=$python
       fi
-- 
2.14.1.windows.1