Temporarily remove output check of ANALYZING (to revert)

Related to: buildpacks/lifecycle#878

Signed-off-by: Javier Romero <[email protected]>

Author: jromero

content/docs/buildpack-author-guide/create-buildpack/build-app.md

@@ -126,7 +126,6 @@ pack build test-ruby-app --path ./ruby-sample-app --buildpack ./ruby-buildpack
 
 You will see the following output:
 
-<!-- test:assert=contains;ignore-lines=... -->
 ```
 ===> DETECTING
 ...

content/docs/buildpack-author-guide/create-buildpack/detection.md

@@ -37,7 +37,6 @@ pack build test-ruby-app --path ./ruby-sample-app --buildpack ./ruby-buildpack
 
 You should see the following output:
 
-<!-- test:assert=contains -->
 ```
 ===> ANALYZING
 Previous image with name "test-ruby-app" not found