test: damn, re-add an include I mistakenly removed.

test/math/remez.cpp

@@ -14,6 +14,9 @@
 
 #include "core.h"
 
+#include "lol/math/real.h"
+#include "lol/math/remez.h"
+
 using lol::real;
 using lol::RemezSolver;