Chore: remove useless envbinding env

[Somefive]

Description of your changes

The "env" parameter for envbinding is not used as the envbinding is deprecated for a while and removed in this version.

I have:

• Read and followed KubeVela's contribution process.
• Related Docs updated properly. In a new feature or configuration option, an update to the documentation is necessary.
• Run make reviewable to ensure this PR is ready for review.
• Added backport release-x.y labels to auto-backport this PR if necessary.

How has this code been tested

Special notes for your reviewer

[codecov]

Codecov Report

Patch coverage: 82.35% and no project coverage change.

Comparison is base (b05ea09) 66.32% compared to head (7ab795e) 66.33%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #6122   +/-   ##
=======================================
  Coverage   66.32%   66.33%           
=======================================
  Files         184      184           
  Lines       24017    24029   +12     
=======================================
+ Hits        15929    15939   +10     
- Misses       6520     6521    +1     
- Partials     1568     1569    +1     

Flag	Coverage Δ
core-unittests	55.52% <70.58%> (+0.01%)	⬆️
e2e-multicluster-test	31.00% <64.70%> (-0.03%)	⬇️
e2etests	32.60% <64.70%> (-0.07%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/workflow/providers/oam/apply.go	57.96% <62.50%> (-1.05%)	⬇️
...ller/core.oam.dev/v1beta1/application/generator.go	83.95% <100.00%> (+1.10%)	⬆️
pkg/workflow/providers/multicluster/deploy.go	74.19% <100.00%> (ø)

... and 6 files with indirect coverage changes

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