Remove some files in 2015/endoh3

These files were not supposed to be committed.

2015/endoh3/Makefile

@@ -133,12 +133,6 @@ all: data ${TARGET}
 ${PROG}: ${PROG}.c
 	${CC} ${CFLAGS} $< -o $@ ${LDFLAGS} ${BACK_TO}
 
-fun: fun.c
-	${CC} ${CFLAGS} $< -o $@ ${LDFLAGS} ${PROG}.c
-
-bf2pdp11: bf2pdp11.c
-	${CC} ${CFLAGS} $< -o $@ ${LDFLAGS} ${PROG}.c
-
 # alternative executable
 #
 alt: data ${ALT_TARGET}