Removed private constructor [skip ci]

Author: ankane

include/pgvector/sparsevec.hpp

@@ -18,16 +18,6 @@ namespace pgvector {
 /// A sparse vector.
 class SparseVector {
   public:
-    /// @private
-    SparseVector(int dimensions, const std::vector<int>& indices, const std::vector<float>& values) {
-        if (values.size() != indices.size()) {
-            throw std::invalid_argument("indices and values must be the same length");
-        }
-        dimensions_ = dimensions;
-        indices_ = indices;
-        values_ = values;
-    }
-
     /// @private
     SparseVector(int dimensions, std::vector<int>&& indices, std::vector<float>&& values) {
         if (values.size() != indices.size()) {