Remove note about v4 task lib status

CONTRIBUTING.md

@@ -1,13 +1,5 @@
 # Instructions for Contributing Code
 
-## Current status
-
-Since at the moment work is proceeding on migrating to Node16, you need to remember the following:
-
-- master branch for SDK v3 (stable and targets Node10)
-- releases/4.x branch for SDK v4 (preview and targets Node16)
-- Changes that were merged for SDK v3 should be cherry-picked for SDK v4 once they are merged to the master branch
-
 ## Contributing bug fixes
 
 We are currently accepting contributions in the form of bug fixes. A bug must have an issue tracking it in the issue tracker. Your pull request should include a link to the bug that you are fixing. If you've submitted a PR for a bug, please post a comment in the bug to avoid duplication of effort.
@@ -22,21 +14,20 @@ Design changes will not be accepted at this time. If you have a design change pr
 
 You will need to complete a Contributor License Agreement (CLA). Briefly, this agreement testifies that you are granting us permission to use the submitted change according to the terms of the project's license, and that the work being submitted is under appropriate copyright.
 
-Please submit a Contributor License Agreement (CLA) before submitting a pull request. You may visit https://cla.microsoft.com to sign digitally. 
+Please submit a Contributor License Agreement (CLA) before submitting a pull request. You may visit <https://cla.microsoft.com> to sign digitally.
 
 ## Housekeeping
 
-Your pull request should: 
+Your pull request should:
 
 * Include a description of what your change intends to do
-* Be a child commit of a reasonably recent commit in the **master** branch 
-    * Requests need not be a single commit, but should be a linear sequence of commits (i.e. no merge commits in your PR)
+* Be a child commit of a reasonably recent commit in the **master** branch
+  * Requests need not be a single commit, but should be a linear sequence of commits (i.e. no merge commits in your PR)
 * It is desirable, but not necessary, for the tests to pass at each commit
-* Have clear commit messages 
-    * e.g. "Refactor feature", "Fix issue", "Add tests for issue"
-* Include adequate tests 
-    * At least one test should fail in the absence of your non-test code changes. If your PR does not match this criteria, please specify why
-    * Tests should include reasonable permutations of the target fix/change
-    * Include baseline changes with your change
-    * All changed code must have 100% code coverage
-
+* Have clear commit messages
+  * e.g. "Refactor feature", "Fix issue", "Add tests for issue"
+* Include adequate tests
+  * At least one test should fail in the absence of your non-test code changes. If your PR does not match this criteria, please specify why
+  * Tests should include reasonable permutations of the target fix/change
+  * Include baseline changes with your change
+  * All changed code must have 100% code coverage