Remove unused file with no explicit legal info

oldXMenu/Imakefile

@@ -1,100 +0,0 @@
-        HEADERS = XMenu.h
-       LINTLIBS = ../lib/X/llib-lX.ln
-   INSTALLFLAGS = $(INSTINCFLAGS)
-         RANLIB = ranlib -t
-
-SRCS =  Activate.c \
-	AddPane.c \
-	AddSel.c \
-	ChgPane.c \
-	ChgSel.c \
-	Create.c \
-	DelPane.c \
-	DelSel.c \
-	Destroy.c \
-	Error.c \
-	EvHand.c \
-	FindPane.c \
-	FindSel.c \
-	InsPane.c \
-	InsSel.c \
-	Internal.c \
-	Locate.c \
-	Post.c \
-	Recomp.c \
-	SetAEQ.c \
-	SetFrz.c \
-	SetPane.c \
-	SetSel.c \
-	XCrAssoc.c \
-	XDelAssoc.c \
-	XDestAssoc.c \
-	XLookAssoc.c \
-	XMakeAssoc.c
-
-OBJS =  Activate.o \
-	AddPane.o \
-	AddSel.o \
-	ChgPane.o \
-	ChgSel.o \
-	Create.o \
-	DelPane.o \
-	DelSel.o \
-	Destroy.o \
-	Error.o \
-	EvHand.o \
-	FindPane.o \
-	FindSel.o \
-	InsPane.o \
-	InsSel.o \
-	Internal.o \
-	Locate.o \
-	Post.o \
-	Recomp.o \
-	SetAEQ.o \
-	SetFrz.o \
-	SetPane.o \
-	SetSel.o \
-	XCrAssoc.o \
-	XDelAssoc.o \
-	XDestAssoc.o \
-	XLookAssoc.o \
-	XMakeAssoc.o
-
-#if DebugOldLibXMenu && ProfileOldLibXMenu
-DebuggedAndProfiledLibraryObjectRule()
-#else
-# if DebugOldLibXMenu
-DebuggedLibraryObjectRule()
-# else
-#  if ProfileOldLibXMenu
-ProfiledLibraryObjectRule()
-#  else
-NormalLibraryObjectRule()
-#  endif
-# endif
-#endif
-
-NormalLibraryTarget(XMenu11,$(OBJS))
-LintLibraryTarget(XMenu11,$(SRCS))
-InstallLibrary(XMenu11,$(USRLIBDIR))
-#if InstallLintLibs
-InstallLintLibrary(XMenu11,$(LINTLIBDIR))
-#endif
-InstallMultiple($(HEADERS),$(INCDIR))
-
-#if ProfileOldLibXMenu
-ProfiledLibraryTarget(XMenu11,$(OBJS))
-InstallLibrary(XMenu11_p,$(USRLIBDIR))
-#endif
-
-#if DebugOldLibXMenu
-DebuggedLibraryTarget(XMenu11,$(OBJS))
-#endif
-
-DependTarget()
-
-NormalLintTarget($(SRCS))
-
-/* arch-tag: bc7d2799-8343-4700-a415-847e7fa12540
-   (do not change this comment) */