clear demo properties

config-center-server/src/main/resources/examcloud/dev/application-demo.properties

@@ -1,5 +0,0 @@
-# ...
-sys.log.level=info
-test1=11111
-test2=22222
-test3=

config-center-server/src/main/resources/examcloud/dev/application.properties

@@ -1,5 +0,0 @@
-# ...
-sys.log.level=error
-test1=111
-test2=222
-test3=333

config-center-server/src/main/resources/examcloud/prod/application-demo.properties

@@ -1,5 +0,0 @@
-# ...
-sys.log.level=info
-$secret.test1=325c1a5dbb80e0bb77403aa08d38573b
-test2=bbbbb
-test3=

config-center-server/src/main/resources/examcloud/prod/application.properties

@@ -1,5 +0,0 @@
-# ...
-sys.log.level=error
-test1=111
-test2=222
-test3=333