fix(module:chart:timeline): remove tickCount

[cipchk]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/ng-alain/delon/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[x] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[x] Documentation content changes
[ ] Application (the showcase website) / infrastructure changes
[ ] Other... Please describe:

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[codecov-io]

Codecov Report

Merging #323 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #323   +/-   ##
=======================================
  Coverage   94.46%   94.46%           
=======================================
  Files         227      227           
  Lines        6055     6055           
  Branches      976      976           
=======================================
  Hits         5720     5720           
  Misses        256      256           
  Partials       79       79

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