math.mathutil: remove deprecated mathutil_test.v (workaround spurious test failures, due to same _test.v name)

vlib/math/mathutil/mathutil_test.v

@@ -1,22 +0,0 @@
-import math as mu
-
-fn test_min() {
-	assert mu.min(42, 13) == 13
-	assert mu.min(5, -10) == -10
-	assert mu.min(7.1, 7.3) == 7.1
-	assert mu.min(u32(32), u32(17)) == 17
-}
-
-fn test_max() {
-	assert mu.max(42, 13) == 42
-	assert mu.max(5, -10) == 5
-	assert mu.max(7.1, 7.3) == 7.3
-	assert mu.max(u32(60), u32(17)) == 60
-}
-
-fn test_abs() {
-	assert mu.abs(99) == 99
-	assert mu.abs(-10) == 10
-	assert mu.abs(1.2345) == 1.2345
-	assert mu.abs(-5.5) == 5.5
-}