cmake: Remove timeout defines from csp_autoconfig.h.in
These three defines are defined in include/csp/csp.h.  They shouldn't
be here in csp_autoconfig.h.in.
#cmakedefine CSP_RDP_MAX_WINDOW @CSP_RDP_MAX_WINDOW@
#cmakedefine CSP_RTABLE_SIZE @CSP_RTABLE_SIZE@
-#define CSP_MAX_TIMEOUT (UINT32_MAX)
-#define CSP_MAX_DELAY CSP_MAX_TIMEOUT
-#define CSP_INFINITY CSP_MAX_TIMEOUT
