[website_docs] Drop unused link definition

[chalin]

Contributes to open-telemetry/opentelemetry.io#922. /cc @austinlparker

[codecov]

Codecov Report

Merging #3881 (626aa5d) into main (5d29503) will increase coverage by 0.06%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               main    #3881      +/-   ##
============================================
+ Coverage     89.94%   90.00%   +0.06%     
- Complexity     4200     4203       +3     
============================================
  Files           502      502              
  Lines         12910    12910              
  Branches       1239     1239              
============================================
+ Hits          11612    11620       +8     
+ Misses          900      894       -6     
+ Partials        398      396       -2     

Impacted Files	Coverage Δ
...telemetry/sdk/trace/export/BatchSpanProcessor.java	90.07% <0.00%> (-0.71%)	⬇️
...ntelemetry/sdk/extension/resources/OsResource.java	90.69% <0.00%> (+4.65%)	⬆️
...ava/io/opentelemetry/sdk/internal/RateLimiter.java	100.00% <0.00%> (+5.88%)	⬆️
...metry/sdk/extension/resources/ProcessResource.java	87.50% <0.00%> (+6.25%)	⬆️
...elemetry/sdk/extension/resources/HostResource.java	92.30% <0.00%> (+15.38%)	⬆️
...dk/extension/resources/ProcessRuntimeResource.java	100.00% <0.00%> (+16.66%)	⬆️

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