doc: Remove documentation of two obsolete spec strings

gcc:
	* doc/invoke.texi (Spec Files): Remove documentation of obsolete
	spec strings "predefines" and "signed_char".

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index f052128e2a5db96a6f4aae48f99f4906fe0be921..3f6634ce5ec29f2749257bdf3485801a2226b34a 100644 (file)
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -36937,9 +36937,6 @@ link         Options to pass to the linker
 lib          Libraries to include on the command line to the linker
 libgcc       Decides which GCC support library to pass to the linker
 linker       Sets the name of the linker
-predefines   Defines to be passed to the C preprocessor
-signed_char  Defines to pass to CPP to say whether @code{char} is signed
-             by default
 startfile    Object files to include at the start of the link
 @end smallexample