Removes the following project configuration files:
- prj_console_float_pc8253.conf : PIT is no longer used
- prj_console_nofloat_*.conf : unsupported by Makefile
Change-Id: I72689fa56413947f3a552645c7b2ed5ad599ed71
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>