Set HAP_LOG_LEVEL to 3 by default

This obviates teh need for HAPPlatformLogLevel() and saves quite a bit
of space due to compile-time optimization.

mos.yml

@@ -55,10 +55,10 @@ conds:
 cdefs:
   HAP_VERSION: '\"1.0.1\"'
   HAP_IDENTIFICATION: '\"https://github.com/mongoose-os-libs/homekit-adk\"'
-  # Tips for saving space:
-  #HAP_LOG_LEVEL: 0
-  #HAP_DISABLE_ASSERTS: 1
-  #HAP_DISABLE_PRECONDITIONS: 1
+  # Tips for saving space: override this to 0, disable asserts and preconditions.
+  HAP_LOG_LEVEL: 3
+  # HAP_DISABLE_ASSERTS: 1
+  # HAP_DISABLE_PRECONDITIONS: 1
 
 tags:
   - c

src/PAL/HAPPlatformLog.c

@@ -20,11 +20,6 @@
 #include "mgos.h"
 #include "mongoose.h"
 
-int HAPPlatformLogLevel(void) {
-    // Pass everything to mos logging subsystem.
-    return kHAPPlatformLogEnabledTypes_Debug;
-}
-
 HAPPlatformLogEnabledTypes HAPPlatformLogGetEnabledTypes(const HAPLogObject* log HAP_UNUSED) {
     // Pass everything to mos logging subsystem.
     return kHAPPlatformLogEnabledTypes_Debug;