doc: drop verify-canonical-types=1 ref

--param verify-canonical-types was removed back in r0-81986-g7313518b90b280.

The same verification is controlled via our generic checking framework
these days.

gcc/ChangeLog:

	* doc/generic.texi (TYPE_CANONICAL): Don't mention long-removed
	--param verify-canonical-types.

diff --git a/gcc/doc/generic.texi b/gcc/doc/generic.texi
index d4ac580a7a8b9cd339d26cb97f7eb963f83746a4..55083b278da4dacf4e9114ca444bf11b2ae0caf0 100644 (file)
--- a/gcc/doc/generic.texi
+++ b/gcc/doc/generic.texi
@@ -397,8 +397,7 @@ guarantee that @code{TYPE_CANONICAL} will point to the canonical type,
 use @code{SET_TYPE_STRUCTURAL_EQUALITY} to make sure that the new
 type--and any type constructed based on it--requires structural
 equality. If you suspect that the canonical type system is
-miscomparing types, pass @code{--param verify-canonical-types=1} to
-the compiler or configure with @code{--enable-checking} to force the
+miscomparing types, configure with @code{--enable-checking} to force the
 compiler to verify its canonical-type comparisons against the
 structural comparisons; the compiler will then print any warnings if
 the canonical types miscompare.