cros_workon: fix common.sh check

Error message not necessary since you already get an error message from bash.

BUG=none
TEST=see below

$ ./cros_workon
./cros_workon: line 13: /usr/lib/crosutils/common.sh: No such file or directory

$ ./cros_workon_make
./cros_workon_make: line 10: /usr/lib/crosutils/common.sh: No such file or directory

Change-Id: I2087d77876376af9ccb497d0a67c354af281c007

[email protected],[email protected]

Review URL: http://codereview.chromium.org/6726039
diff --git a/host/cros_workon_make b/host/cros_workon_make
index 7d69e9a..04866b3 100755
--- a/host/cros_workon_make
+++ b/host/cros_workon_make
@@ -7,7 +7,7 @@
 # Simple wrapper script to build a cros_workon package incrementally.
 # You must already be cros_workon'ing the package in question.
 
-. /usr/lib/crosutils/common.sh || (echo "Unable to load common.sh" && exit 1)
+. /usr/lib/crosutils/common.sh || exit 1
 
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