options: remove -F

Deprecated in compton, in distant history.

Signed-off-by: Yuxuan Shui <yshuiv7@gmail.com>

man/picom.1.asciidoc

@@ -49,9 +49,6 @@ OPTIONS
 *-f*, *--fading*::
 	Fade windows in/out when opening/closing and when opacity changes, unless *--no-fading-openclose* is used.
 
-*-F*::
-	Equals to *-f*. Deprecated.
-
 *-i*, *--inactive-opacity*='OPACITY'::
 	Opacity of inactive windows. (0.1 - 1.0, defaults to 1.0)
 

src/options.c

@@ -305,7 +305,7 @@ static void usage(const char *argv0, int ret) {
 	}
 }
 
-static const char *shortopts = "D:I:O:r:o:m:l:t:i:e:hscnfFCazGb";
+static const char *shortopts = "D:I:O:r:o:m:l:t:i:e:hscnfCazGb";
 
 /// Get config options that are needed to parse the rest of the options
 /// Return true if we should quit
@@ -414,7 +414,6 @@ bool get_cfg(options_t *opt, int argc, char *const *argv, bool shadow_enable,
 		case 'O': opt->fade_out_step = normalize_d(atof(optarg)); break;
 		case 'c': shadow_enable = true; break;
 		case 'f':
-		case 'F':
 			fading_enable = true;
 			break;
 		P_CASEINT('r', shadow_radius);