chore: removes pedersen commit native pairs method (#3073)

This method is no longer being used, we can bring it back if it is
deemed necessary.

Related to #3029 

# Checklist:
Remove the checklist to signal you've completed it. Enable auto-merge if
the PR is ready to merge.
- [ ] If the pull request requires a cryptography review (e.g.
cryptographic algorithm implementations) I have added the 'crypto' tag.
- [ ] I have reviewed my diff in github, line by line and removed
unexpected formatting changes, testing logs, or commented-out code.
- [ ] Every change is related to the PR description.
- [ ] I have
[linked](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue)
this pull request to relevant issues (if any exist).

barretenberg/cpp/src/barretenberg/crypto/pedersen_commitment/pedersen.cpp

@@ -29,18 +29,5 @@ typename Curve::AffineElement pedersen_commitment_base<Curve>::commit_native(con
     }
     return result.normalize();
 }
-
-template <typename Curve>
-typename Curve::AffineElement pedersen_commitment_base<Curve>::commit_native(
-    const std::vector<std::pair<Fq, GeneratorContext>>& input_pairs)
-{
-    // (TODO @dbanks12 this method may be slow and can be optimised. Issue at .)
-    Element result = Group::point_at_infinity;
-    for (auto& [scalar, context] : input_pairs) {
-        Element point = context.generators->get(1, context.offset, context.domain_separator)[0];
-        result += point * static_cast<uint256_t>(scalar);
-    }
-    return result.normalize();
-}
 template class pedersen_commitment_base<curve::Grumpkin>;
 } // namespace crypto

barretenberg/cpp/src/barretenberg/crypto/pedersen_commitment/pedersen.hpp

@@ -28,7 +28,6 @@ template <typename Curve> class pedersen_commitment_base {
     using GeneratorContext = typename crypto::GeneratorContext<Curve>;
 
     static AffineElement commit_native(const std::vector<Fq>& inputs, GeneratorContext context = {});
-    static AffineElement commit_native(const std::vector<std::pair<Fq, GeneratorContext>>& input_pairs);
 };
 
 extern template class pedersen_commitment_base<curve::Grumpkin>;