Remove inspectit-ocelot-demo from repository

[aaronweissler]

inspectIT Ocelot's demos now reside in their own repository at https://github.com/inspectIT/inspectit-ocelot-demo, so the folder containing it is removed and references to it are updated with this PR.

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This change is 

[codecov]

Codecov Report

Merging #1384 (074d487) into master (3333eec) will increase coverage by 0.06%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #1384      +/-   ##
============================================
+ Coverage     80.98%   81.04%   +0.06%     
  Complexity     2071     2071              
============================================
  Files           211      211              
  Lines          6593     6593              
  Branches        782      782              
============================================
+ Hits           5339     5343       +4     
+ Misses          955      951       -4     
  Partials        299      299              

Impacted Files	Coverage Δ
...in/java/rocks/inspectit/ocelot/core/AgentImpl.java	71.43% <0.00%> (+8.16%)	⬆️

[heiko-holz]

Reviewed 51 of 52 files at r1, 1 of 1 files at r2, all commit messages.
Reviewable status: all files reviewed, 2 unresolved discussions (waiting on @aaronweissler)

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inspectit-ocelot-documentation/docs/getting-started/docker-examples.md, line 9 at r2 (raw file):

## inspectIT Ocelot Demo

If you would like to check inspectIT Ocelot in action with a demo application, you can use our docker compose example.

Add link to the directory/repo of the docker demo in https://github.com/inspectIT/inspectit-ocelot-demo.

The appropriate directory (spring-petclinic-docker-demo) will be available soon.

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inspectit-ocelot-documentation/docs/getting-started/docker-examples.md, line 84 at r2 (raw file):

Details on accessing monitoring infrastructure components are listed below, depending on the selected demo scenario.

### Starting the Demo on Windows Using WSL

Why was this text block removed?
Is the problem solved?

[heiko-holz]

Reviewed all commit messages.
Reviewable status: 51 of 52 files reviewed, all discussions resolved (waiting on @heiko-holz)

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inspectit-ocelot-documentation/docs/getting-started/docker-examples.md, line 84 at r2 (raw file):

Previously, heiko-holz (Heiko Holz) wrote…

Why was this text block removed?
Is the problem solved?

We agreed on adding the note that this work around is only needed in some Docker Desktop version with WSL 1