cpr: drop dead code

[ericLemanissier]

identfied by #21163

Specify library name and version: cpr/*

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• I've read the contributing guidelines.
• I've used a recent Conan client version close to the currently deployed.
• I've tried at least one configuration locally with the conan-center hook activated.

[ericLemanissier]

The build is now finished. You can take a look at the results here

[ghost]

I detected other pull requests that are modifying cpr/all recipe:

• cpr: use version range for libcurl #21562

This message is automatically generated by https://github.com/ericLemanissier/conan-center-conflicting-prs so don't hesitate to report issues/improvements there.

[conan-center-bot]

Conan v1 pipeline ✔️

All green in build 3 (f67faaba93d3e29bb6443d797291a1f010d75699):

• cpr/1.10.5:
  All packages built successfully! (All logs)

• cpr/1.10.4:
  All packages built successfully! (All logs)

• cpr/1.7.2:
  All packages built successfully! (All logs)

• cpr/1.8.1:
  All packages built successfully! (All logs)

• cpr/1.9.3:
  All packages built successfully! (All logs)

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Conan v2 pipeline ✔️

Note: Conan v2 builds are now mandatory. Please read our discussion about it.

All green in build 3 (f67faaba93d3e29bb6443d797291a1f010d75699):

• cpr/1.10.5:
  All packages built successfully! (All logs)

• cpr/1.10.4:
  All packages built successfully! (All logs)

• cpr/1.9.3:
  All packages built successfully! (All logs)

• cpr/1.8.1:
  All packages built successfully! (All logs)

• cpr/1.7.2:
  All packages built successfully! (All logs)