[K/N] Use gradle-level conditional compilation for core symbolication

kotlin-native/runtime/src/source_info/core_symbolication/cpp/SourceInfo.cpp

@@ -5,7 +5,6 @@
 
 #include "SourceInfo.h"
 
-#ifdef KONAN_CORE_SYMBOLICATION
 #include <KAssert.h>
 #include <cstdint>
 #include <dlfcn.h>
@@ -196,5 +195,4 @@ extern "C" int Kotlin_getSourceInfo_core_symbolication(void* addr, SourceInfo *r
   SYM_LOG("}\n");
   result_buffer[0] = result;
   return 1;
-}
-#endif // KONAN_CORE_SYMBOLICATION
+}