ClangTidy fixes
Change-Id: Id7358fcdccae69b46b479d55ed6aee80efd3431e
diff --git a/internal/ceres/solver.cc b/internal/ceres/solver.cc
index 010ad26..97c1d87 100644
--- a/internal/ceres/solver.cc
+++ b/internal/ceres/solver.cc
@@ -163,9 +163,6 @@
"was not enabled when Ceres Solver was built.";
constexpr char kNoNesdisFormat[] =
"NESDIS is not available with sparse_linear_algebra_library_type = %s.";
- constexpr char kMixedFormat[] =
- "use_mixed_precision_solves with %s is not supported with "
- "sparse_linear_algebra_library_type = %s";
constexpr char kDynamicSparsityFormat[] =
"dynamic sparsity is not supported with "
"sparse_linear_algebra_library_type = %s";