[YUNIKORN-3264] Remove code: statedumps and dashboard in web repo

[manirajv06]

What is this PR for?

Removed the plugin related variables from json db and dashboard js files.

What type of PR is it?

• - Improvement

Todos

• - Task

What is the Jira issue?

https://issues.apache.org/jira/browse/YUNIKORN-3264

How should this be tested?

Screenshots (if appropriate)

Questions:

• - The licenses files need update.
• - There is breaking changes for older versions.
• - It needs documentation.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 38.77%. Comparing base (d4beecb) to head (7ee0ff9).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #272   +/-   ##
=======================================
  Coverage   38.77%   38.77%           
=======================================
  Files           2        2           
  Lines          49       49           
=======================================
  Hits           19       19           
  Misses         27       27           
  Partials        3        3           

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[wilfred-s]

LGTM