Fixed failing compilation on OS X after temp code removal (f7100301f)

After removing the temperature code from cpu.c compilation was failing on OS X 10.6 with the below message. Removing this line enabled compilation to complete.

       CC       cpu_la-cpu.lo
     cpu.c: In function ‘init’:
     cpu.c:235: error: ‘cpu_temp_retry_max’ undeclared (first use in this function)
     cpu.c:235: error: (Each undeclared identifier is reported only once
     cpu.c:235: error: for each function it appears in.)
     make[3]: *** [cpu_la-cpu.lo] Error 1
     make[2]: *** [all-recursive] Error 1
     make[1]: *** [all] Error 2
     make: *** [all-recursive] Error 1