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diff --git a/src/ipa/libipa/matrix.cpp b/src/ipa/libipa/matrix.cpp
deleted file mode 100644
index 8346f0d3..00000000
--- a/src/ipa/libipa/matrix.cpp
+++ /dev/null
@@ -1,149 +0,0 @@
-/* SPDX-License-Identifier: LGPL-2.1-or-later */
-/*
- * Copyright (C) 2024, Paul Elder <paul.elder@ideasonboard.com>
- *
- * Matrix and related operations
- */
-
-#include "matrix.h"
-
-#include <libcamera/base/log.h>
-
-/**
- * \file matrix.h
- * \brief Matrix class
- */
-
-namespace libcamera {
-
-LOG_DEFINE_CATEGORY(Matrix)
-
-namespace ipa {
-
-/**
- * \class Matrix
- * \brief Matrix class
- * \tparam T Type of numerical values to be stored in the matrix
- * \tparam Rows Number of rows in the matrix
- * \tparam Cols Number of columns in the matrix
- */
-
-/**
- * \fn Matrix::Matrix()
- * \brief Construct a zero matrix
- */
-
-/**
- * \fn Matrix::Matrix(const std::vector<T> &data)
- * \brief Construct a matrix from supplied data
- * \param[in] data Data from which to construct a matrix
- *
- * \a data is a one-dimensional vector and will be turned into a matrix in
- * row-major order. The size of \a data must be equal to the product of the
- * number of rows and columns of the matrix (Rows x Cols).
- */
-
-/**
- * \fn Matrix::identity()
- * \brief Construct an identity matrix
- */
-
-/**
- * \fn Matrix::toString()
- * \brief Assemble and return a string describing the matrix
- * \return A string describing the matrix
- */
-
-/**
- * \fn Span<const T, Cols> Matrix::operator[](size_t i) const
- * \brief Index to a row in the matrix
- * \param[in] i Index of row to retrieve
- *
- * This operator[] returns a Span, which can then be indexed into again with
- * another operator[], allowing a convenient m[i][j] to access elements of the
- * matrix. Note that the lifetime of the Span returned by this first-level
- * operator[] is bound to that of the Matrix itself, so it is not recommended
- * to save the Span that is the result of this operator[].
- *
- * \return Row \a i from the matrix, as a Span
- */
-
-/**
- * \fn Matrix::operator[](size_t i)
- * \copydoc Matrix::operator[](size_t i) const
- */
-
-/**
- * \fn Matrix<T, Rows, Cols> &Matrix::operator*=(U d)
- * \brief Multiply the matrix by a scalar in-place
- * \tparam U Type of the numerical scalar value
- * \param d The scalar multiplier
- * \return Product of this matrix and scalar \a d
- */
-
-/**
- * \fn Matrix::Matrix<U, Rows, Cols> operator*(T d, const Matrix<U, Rows, Cols> &m)
- * \brief Multiply the matrix by a scalar
- * \tparam T Type of the numerical scalar value
- * \tparam U Type of numerical values in the matrix
- * \tparam Rows Number of rows in the matrix
- * \tparam Cols Number of columns in the matrix
- * \param d The scalar multiplier
- * \param m The matrix
- * \return Product of scalar \a d and matrix \a m
- */
-
-/**
- * \fn Matrix::Matrix<U, Rows, Cols> operator*(const Matrix<U, Rows, Cols> &m, T d)
- * \copydoc operator*(T d, const Matrix<U, Rows, Cols> &m)
- */
-
-/**
- * \fn Matrix<T, R1, C2> operator*(const Matrix<T, R1, C1> &m1, const Matrix<T, R2, C2> &m2)
- * \brief Matrix multiplication
- * \tparam T Type of numerical values in the matrices
- * \tparam R1 Number of rows in the first matrix
- * \tparam C1 Number of columns in the first matrix
- * \tparam R2 Number of rows in the second matrix
- * \tparam C2 Number of columns in the second matrix
- * \param m1 Multiplicand matrix
- * \param m2 Multiplier matrix
- * \return Matrix product of matrices \a m1 and \a m2
- */
-
-/**
- * \fn Matrix<T, Rows, Cols> operator+(const Matrix<T, Rows, Cols> &m1, const Matrix<T, Rows, Cols> &m2)
- * \brief Matrix addition
- * \tparam T Type of numerical values in the matrices
- * \tparam Rows Number of rows in the matrices
- * \tparam Cols Number of columns in the matrices
- * \param m1 Summand matrix
- * \param m2 Summand matrix
- * \return Matrix sum of matrices \a m1 and \a m2
- */
-
-#ifndef __DOXYGEN__
-/*
- * The YAML data shall be a list of numerical values. Its size shall be equal
- * to the product of the number of rows and columns of the matrix (Rows x
- * Cols). The values shall be stored in row-major order.
- */
-bool matrixValidateYaml(const YamlObject &obj, unsigned int size)
-{
-	if (!obj.isList())
-		return false;
-
-	if (obj.size() != size) {
-		LOG(Matrix, Error)
-			<< "Wrong number of values in matrix: expected "
-			<< size << ", got " << obj.size();
-		return false;
-	}
-
-	return true;
-}
-#endif /* __DOXYGEN__ */
-
-} /* namespace ipa */
-
-} /* namespace libcamera */