Remove dead code used to support deleted feature.

Post-build email error reporting was removed in commit e7e8930 but not
all code needed to support that feature had been removed. This is now
rectified.

kdesrc-build

@@ -6953,87 +6953,6 @@ EOF
     return @resultList;
 }
 
-# Subroutine to try an intelligently determine what caused the module to fail
-# to build/update/whatever.  The first parameter is the name of the module,
-# and the return value is the best guess at the error.  If no error is detected
-# the last 30 lines of the file are returned instead.
-sub whats_the_module_error
-{
-    my $module = shift;
-    my $file = get_option($module, '#error-log-file');
-
-    return "No logfile for module $module.\n" unless $file;
-
-    open ERRORFILE, "<$file" or return "Can't open logfile $file.\n";
-
-    my @lastlines;      # Used to buffer last lines read.
-    my @errors;         # Tracks errors and the file they were found in.
-    my $lastfile = '';  # Tracks last filename read in error log.
-    my $errorCount = 0;
-    my $output;
-
-    # TODO: This code is tested for gcc and GNU ld, as, etc, I'm not sure how
-    # effective it is at parsing the error output of other build toolchains.
-    while (<ERRORFILE>)
-    {
-        # Keep last 30 lines.
-        push @lastlines, $_;
-        shift @lastlines if scalar @lastlines > 30;
-
-        my ($file, $line, $msg) = /^([^:]*):(\d+):\s*(.*)$/;
-
-        next unless ($file and $line and $msg);
-        next if $msg =~ /warn/i;
-        next if $msg =~ /^in file included from/i;
-        next if $msg =~ /^\s*$/ or $file =~ /^\s*$/;
-        $msg =~ s/^error: ?//i;
-
-        if ($file eq $lastfile)
-        {
-            $errorCount++;
-            push @errors, $msg if $errorCount < 5;
-        }
-        else
-        {
-            # Check is because we print info on the last file read, so there
-            # should be a last file. ;)
-            if ($lastfile)
-            {
-                my $error = $errorCount == 1 ? "error" : "errors";
-                $output .= "$errorCount $error in $lastfile\n";
-                $output .= "Error: $_\n" foreach (@errors);
-                $output .= "\t<clipped>\n" if $errorCount > 5;
-                $output .= "\n";
-            }
-
-            $errorCount = 1;
-            @errors = ($msg);
-        }
-
-        $lastfile = $file;
-    }
-
-    close ERRORFILE;
-
-    if (not $lastfile)
-    {
-        # Print out last lines read, hopefully a more descriptive error
-        # message is in there.
-        $output .= "Can't find errors, last " . scalar @lastlines . " line(s) of the output are:\n";
-        $output .= $_ foreach (@lastlines);
-        return $output;
-    }
-
-    # Don't forget to display info on last file read since it won't be done in
-    # the loop.
-    my $error = $errorCount == 1 ? "error" : "errors";
-    $output .= "$errorCount $error in $lastfile\n";
-    $output .= "Error: $_\n" foreach (@errors);
-    $output .= "\t<clipped>\n" if $errorCount > 5;
-
-    return $output;
-}
-
 # Exits out of kdesrc-build, executing the user's preferred shell instead.  The
 # difference is that the environment variables should be as set in kdesrc-build
 # instead of as read from .bashrc and friends.