Clean up gccgo manual page.

gcc/go/gccgo.texi

@@ -11,41 +11,6 @@
 
 @include gcc-common.texi
 
-@c Copyright years for this manual.
-@set copyrights-go 2010-2021
-
-@copying
-@c man begin COPYRIGHT
-Copyright @copyright{} @value{copyrights-go} Free Software Foundation, Inc.
-
-Permission is granted to copy, distribute and/or modify this document
-under the terms of the GNU Free Documentation License, Version 1.3 or
-any later version published by the Free Software Foundation; with no
-Invariant Sections, the Front-Cover Texts being (a) (see below), and
-with the Back-Cover Texts being (b) (see below).
-A copy of the license is included in the
-@c man end
-section entitled ``GNU Free Documentation License''.
-@ignore
-@c man begin COPYRIGHT
-man page gfdl(7).
-@c man end
-@end ignore
-
-@c man begin COPYRIGHT
-
-(a) The FSF's Front-Cover Text is:
-
-     A GNU Manual
-
-(b) The FSF's Back-Cover Text is:
-
-     You have freedom to copy and modify this GNU Manual, like GNU
-     software.  Copies published by the Free Software Foundation raise
-     funds for GNU development.
-@c man end
-@end copying
-
 @ifinfo
 @format
 @dircategory Software development
@@ -101,25 +66,18 @@ package documentation, see @uref{http://golang.org/}.
 @node Invoking gccgo
 @chapter Invoking gccgo
 
-@c man title gccgo A GCC-based compiler for the Go language
+@subsubheading Synopsis
 
-@ignore
-@c man begin SYNOPSIS gccgo
 gccgo [@option{-c}|@option{-S}]
       [@option{-g}] [@option{-pg}] [@option{-O}@var{level}]
       [@option{-I}@var{dir}@dots{}] [@option{-L}@var{dir}@dots{}]
       [@option{-o} @var{outfile}] @var{infile}@dots{}
 
+
+@subsubheading Description
+
 Only the most useful options are listed here; see below for the
 remainder.
-@c man end
-@c man begin SEEALSO
-gpl(7), gfdl(7), fsf-funding(7), gcc(1)
-and the Info entries for @file{gccgo} and @file{gcc}.
-@c man end
-@end ignore
-
-@c man begin DESCRIPTION gccgo
 
 The @command{gccgo} command is a frontend to @command{gcc} and
 supports many of the same options.  @xref{Option Summary, , Option
@@ -146,9 +104,7 @@ Go programs must generally be compiled with debugging information, and
 @option{-g1} is the default as described below.  Stripping a Go
 program will generally cause it to misbehave or fail.
 
-@c man end
-
-@c man begin OPTIONS gccgo
+@subsubheading Options
 
 @table @gcctabopt
 @item -I@var{dir}
@@ -283,8 +239,6 @@ debugging information, in which case certain standard library
 functions, such as @code{runtime.Callers}, will not operate correctly.
 @end table
 
-@c man end
-
 @node Import and Export
 @chapter Import and Export