xtensa: remove hifi_mini sim target
xtensa: remove hifi_mini sim target

The core build in the SDK does not have a timer, making it impossible
to use this core with most of the sanity checks. We are working on
getting a special package of cores for Zephyr which meet our build
requirments; until then, remove this core as it doesn't build.

Change-Id: I3fa201f3c6b5724501e8cb1e1b8ba631436ebc23
Signed-off-by: Andrew Boie <aab045b28152628be6af0e556050d0381fd0a34d@intel.com>

nashif/zephyr,galak/zephyr,aceofall/zephyr-iotos,erwango/zephyr,fbsder/zephyr,finikorg/zephyr,bigdinotech/zephyr,ldts/zephyr,fbsder/zephyr,mbolivar/zephyr,runchip/zephyr-cc3200,kraj/zephyr,holtmann/zephyr,bigdinotech/zephyr,ldts/zephyr,explora26/zephyr,holtmann/zephyr,runchip/zephyr-cc3200,ldts/zephyr,sharronliu/zephyr,sharronliu/zephyr,runchip/zephyr-cc3200,nashif/zephyr,Vudentz/zephyr,zephyriot/zephyr,fractalclone/zephyr-riscv,zephyriot/zephyr,fractalclone/zephyr-riscv,pklazy/zephyr,runchip/zephyr-cc3200,nashif/zephyr,punitvara/zephyr,bboozzoo/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,Vudentz/zephyr,GiulianoFranchetto/zephyr,mbolivar/zephyr,pklazy/zephyr,sharronliu/zephyr,holtmann/zephyr,fbsder/zephyr,bigdinotech/zephyr,kraj/zephyr,holtmann/zephyr,runchip/zephyr-cc3220,aceofall/zephyr-iotos,erwango/zephyr,Vudentz/zephyr,bboozzoo/zephyr,explora26/zephyr,aceofall/zephyr-iotos,bboozzoo/zephyr,punitvara/zephyr,bigdinotech/zephyr,nashif/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,explora26/zephyr,zephyriot/zephyr,erwango/zephyr,GiulianoFranchetto/zephyr,punitvara/zephyr,ldts/zephyr,Vudentz/zephyr,GiulianoFranchetto/zephyr,kraj/zephyr,erwango/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,kraj/zephyr,mbolivar/zephyr,sharronliu/zephyr,rsalveti/zephyr,rsalveti/zephyr,sharronliu/zephyr,zephyrproject-rtos/zephyr,GiulianoFranchetto/zephyr,kraj/zephyr,runchip/zephyr-cc3220,fractalclone/zephyr-riscv,rsalveti/zephyr,bboozzoo/zephyr,Vudentz/zephyr,zephyriot/zephyr,mbolivar/zephyr,runchip/zephyr-cc3220,finikorg/zephyr,bigdinotech/zephyr,fractalclone/zephyr-riscv,fbsder/zephyr,rsalveti/zephyr,holtmann/zephyr,pklazy/zephyr,runchip/zephyr-cc3220,zephyrproject-rtos/zephyr,finikorg/zephyr,finikorg/zephyr,punitvara/zephyr,bboozzoo/zephyr,Vudentz/zephyr,explora26/zephyr,GiulianoFranchetto/zephyr,fbsder/zephyr,rsalveti/zephyr,pklazy/zephyr,fractalclone/zephyr-riscv,zephyriot/zephyr,explora26/zephyr,pklazy/zephyr,mbolivar/zephyr,aceofall/zephyr-iotos,runchip/zephyr-cc3200,aceofall/zephyr-iotos,erwango/zephyr,punitvara/zephyr,galak/zephyr,runchip/zephyr-cc3220,galak/zephyr,ldts/zephyr,nashif/zephyr