dreport: removing logging error in altfwprintenv dump plugin

This script logs error when executed on system which has
single BMC flash chip.

This Alt flash config script works only on systems
which has 2 BMC flash chips.

Signed-off-by: Marri Devender Rao <devenrao@in.ibm.com>
Change-Id: If80645cf4946e454ae676a2e656b091117deafb1
diff --git a/tools/dreport.d/plugins.d/altfwprintenv b/tools/dreport.d/plugins.d/altfwprintenv
index d9c0ace..69a5532 100644
--- a/tools/dreport.d/plugins.d/altfwprintenv
+++ b/tools/dreport.d/plugins.d/altfwprintenv
@@ -4,13 +4,12 @@
 # @brief: Print variables from Alt flash U-Boot environment.
 #
 
-. $DREPORT_INCLUDE/functions
+. "$DREPORT_INCLUDE"/functions
 
 desc="Alt-Flash: U-Boot environment variables"
 env_config="/etc/alt_fw_env.config"
 
 if [ ! -f $env_config ]; then
-    log_error "$env_config does not exist"
     exit
 fi