games/cursive: remove post-patch sed substituion

Reinstante patch instead since we are replacing just static content
see: https://www.freebsd.org/doc/en/books/porters-handbook/slow-patch.html#slow-patch-automatic-replacements

Not bumping PORTREVISION.

Reported by:    mat@

games/cursive/Makefile

@@ -17,9 +17,6 @@ NO_WRKSUBDIR=	yes
 PLIST_FILES=	bin/cursive \
 		man/man6/cursive.6.gz
 
-post-patch:
-	@${REINPLACE_CMD} -e 's|/usr/games/||g' ${WRKSRC}/cursive.6
-
 do-build:
 	${CC} ${CFLAGS} -c ${WRKSRC}/cursive.c -o ${WRKSRC}/cursive.o
 	${CC} ${CFLAGS} -c ${WRKSRC}/font.c -o ${WRKSRC}/font.o

games/cursive/files/patch-cursive.6

@@ -0,0 +1,11 @@
+--- cursive.6.orig	1991-10-20 01:13:47 UTC
++++ cursive.6
+@@ -3,7 +3,7 @@
+ .SH NAME
+ cursive \- print text in cursive script
+ .SH SYNOPSIS
+-.B /usr/games/cursive
++.B cursive
+ [
+ .BI \-i n
+ ]