build: Remove hardware/qcom-caf/thermal pathmap

* Thermal HAL was converted to HIDL service and .mk to .bp,
  devices can override it by using a different named service

Change-Id: Ia3e0d86e791555992e7889f33f7d55f224b9a582

Author: mikeNG

build/core/qcom_target.mk

@@ -18,7 +18,6 @@ $(call set-device-specific-path,MEDIA,media,hardware/qcom-caf/$(QCOM_HARDWARE_VA
 $(call set-device-specific-path,BT_VENDOR,bt-vendor,hardware/qcom-caf/bt)
 $(call set-device-specific-path,DATA_IPA_CFG_MGR,data-ipa-cfg-mgr,vendor/qcom/opensource/data-ipa-cfg-mgr)
 $(call set-device-specific-path,DATASERVICES,dataservices,vendor/qcom/opensource/dataservices)
-$(call set-device-specific-path,THERMAL,thermal,hardware/qcom-caf/thermal)
 $(call set-device-specific-path,VR,vr,hardware/qcom-caf/vr)
 $(call set-device-specific-path,WLAN,wlan,hardware/qcom-caf/wlan)