dead code?

[ibtaylor]

I'm confused by this function. Nothing ever seems to call it.

nanoflann/include/nanoflann.hpp

Lines 1962 to 1971 in e687af0

	// Returns the L2 distance between the vector "p1[0:size-1]" and the data point with index "idx_p2" stored in the class:
	inline num_t kdtree_distance(const num_t *p1, const IndexType idx_p2, IndexType size) const
	{
	num_t s = 0;
	for (IndexType i = 0; i < size; i++) {
	const num_t d = p1[i] - m_data_matrix.coeff(idx_p2, i);
	s += d * d;
	}
	return s;
	}

Seems like it wasn't fully cleared out during this commit.
b83c291#diff-6972321bb8a18bf106257beeecb4a09eL371

[jlblancoc]

@ibtaylor thanks!! You were right... It's clear that this code was useless, specially since there is a template argument for the type of metric, and this old code was only for L2.

All good 👍