[CLEANUP] Remove assigned but unused variables

[CLEANUP] Remove assigned but unused variables

gcc (Debian 4.6.0-2) 4.6.1 20110329 (prerelease)
Copyright (C) 2011 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

...
src/proto_http.c:3029:14: warning: variable â\80\98del_clâ\80\99 set but not used [-Wunused-but-set-variable]
In file included from ebtree/eb64tree.c:23:0:
ebtree/eb64tree.h: In function â\80\98__eb64_lookupâ\80\99:
ebtree/eb64tree.h:128:6: warning: variable â\80\98node_bitâ\80\99 set but not used [-Wunused-but-set-variable]
ebtree/eb64tree.h: In function â\80\98__eb64i_lookupâ\80\99:
ebtree/eb64tree.h:180:6: warning: variable â\80\98node_bitâ\80\99 set but not used [-Wunused-but-set-variable]
In file included from ebtree/ebpttree.h:26:0,
                 from ebtree/ebimtree.c:23:
ebtree/eb64tree.h: In function â\80\98__eb64_lookupâ\80\99:
ebtree/eb64tree.h:128:6: warning: variable â\80\98node_bitâ\80\99 set but not used [-Wunused-but-set-variable]
ebtree/eb64tree.h: In function â\80\98__eb64i_lookupâ\80\99:
ebtree/eb64tree.h:180:6: warning: variable â\80\98node_bitâ\80\99 set but not used [-Wunused-but-set-variable]
In file included from ebtree/ebpttree.h:26:0,
                 from ebtree/ebistree.h:25,
                 from ebtree/ebistree.c:23:
ebtree/eb64tree.h: In function â\80\98__eb64_lookupâ\80\99:
ebtree/eb64tree.h:128:6: warning: variable â\80\98node_bitâ\80\99 set but not used [-Wunused-but-set-variable]
ebtree/eb64tree.h: In function â\80\98__eb64i_lookupâ\80\99:
ebtree/eb64tree.h:180:6: warning: variable â\80\98node_bitâ\80\99 set but not used [-Wunused-but-set-variable]