Remove .tbl file. It is too hard to keep this in sync with textpre.awk.

It would be good to create a program to generate a .tbl file from the same
source as the text preprocessor.

hg-commit-id: 3d3d4dc1f559

extras/rby.tbl

@@ -1,90 +0,0 @@
-4F==
-57=#
-51=*
-52=A1
-53=A2
-54=PK
-55=+
-58=$
-7F= 
-80=A
-81=B
-82=C
-83=D
-84=E
-85=F
-86=G
-87=H
-88=I
-89=J
-8A=K
-8B=L
-8C=M
-8D=N
-8E=O
-8F=P
-90=Q
-91=R
-92=S
-93=T
-94=U
-95=V
-96=W
-97=X
-98=Y
-99=Z
-9C=:
-A0=a
-A1=b
-A2=c
-A3=d
-A4=e
-A5=f
-A6=g
-A7=h
-A8=i
-A9=j
-AA=k
-AB=l
-AC=m
-AD=n
-AE=o
-AF=p
-B0=q
-B1=r
-B2=s
-B3=t
-B4=u
-B5=v
-B6=w
-B7=x
-B8=y
-B9=z
-BA=‚
-BC='l
-BD='s
-BE='t
-BF='v
-E0='
-E1=PK
-E2=MN
-E3=-
-E4='r
-E5='m
-E6=?
-E7=!
-E8=.
-F4=,
-F6=0
-F7=1
-F8=2
-F9=3
-FA=4
-FB=5
-FC=6
-FD=7
-FE=8
-FF=9
-4E=[E]
-F3=/
-50=@