tcl: fix sed command in do_install

tcl: fix sed command in do_install

The -I= and -L= is used for cross compile, target doesn't need, and
binconfig.class can handle usr/bin/crossscripts/tclConfig.sh.

Fix do_configure error for the recipe which uses tclConfig.sh, for
example, postgresql.do_configure:
configure: error: header file <tcl.h> is required for Tcl

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>