fix: remove not related instructions to core libraries

Author: miguelvelezsa

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -44,25 +44,6 @@ body:
         - label: "Check the API's issue tracker:
             https://cloud.google.com/support/docs/issue-trackers"
           required: true
-  - type: textarea
-    attributes:
-      label: >
-        A screenshot that you have tested with "Try this API".
-      description: > 
-        As our client libraries are mostly autogenerated, we kindly request
-        that you test whether your issue is with the client library, or with the
-        API itself. To do so, please search for your API
-        here: https://developers.google.com/apis-explorer and attempt to
-        reproduce the issue in the given method. Please include a screenshot of
-        the response in "Try this API". This response should NOT match the current
-        behavior you are experiencing. If the behavior is the same, it means
-        that you are likely experiencing a bug with the API itself. In that
-        case, please submit an issue to the API team, either by submitting an
-        issue in its issue tracker https://cloud.google.com/support/docs/issue-trackers), or by
-        submitting an issue in its linked tracker in the .repo-metadata.json
-        file in the API under packages/* (for example, https://github.com/googleapis/google-cloud-node/blob/58419684469e3900146c8e830543bf4dc0cbb2be/packages/google-cloud-batch/.repo-metadata.json#L6)        
-    validations:
-      required: true
   - type: input
     attributes:
       label: >

.github/ISSUE_TEMPLATE/feature_request.yaml

@@ -11,27 +11,6 @@ body:
         console](https://cloud.google.com/support/) instead of filing on GitHub.
         This will ensure a timely response. Otherwise, please make sure to
         follow the steps below.
-  - type: textarea
-    attributes:
-      label: >
-        A screenshot that you have tested with "Try this API".
-      description: > 
-        As our client libraries are mostly autogenerated, we kindly request
-        that you test whether your feature request is with the client library, or with the
-        API itself. To do so, please search for your API
-        here: https://developers.google.com/apis-explorer and attempt to
-        reproduce the issue in the given method. Please include a screenshot of
-        the response in "Try this API". This response should NOT match the current
-        behavior you are experiencing. If the behavior is the same, it means
-        that you are likely requesting a feature for the API itself. In that
-        case, please submit an issue to the API team, either by submitting an
-        issue in its issue tracker https://cloud.google.com/support/docs/issue-trackers), or by
-        submitting an issue in its linked tracker in the .repo-metadata.json
-        file in the API under packages/* ([example](https://github.com/googleapis/google-cloud-node/blob/58419684469e3900146c8e830543bf4dc0cbb2be/packages/google-cloud-batch/.repo-metadata.json#L6))
-
-         Examples of common library-specific issues vs. API issues are: retry strategies, authentication questions, issues with typings. 
-    validations:
-      required: true
   - type: textarea
     attributes:
       label: >