CMake: Remove unnecessary include_directories for dynarmic

Dynarmic already adds the correct include paths to the library target.

src/core/CMakeLists.txt

@@ -374,10 +374,7 @@ set(HEADERS
             telemetry_session.h
             )
 
-include_directories(../../externals/dynarmic/include)
-
 create_directory_groups(${SRCS} ${HEADERS})
-
 add_library(core STATIC ${SRCS} ${HEADERS})
 target_link_libraries(core PUBLIC common PRIVATE audio_core video_core)
 target_link_libraries(core PUBLIC Boost::boost PRIVATE cryptopp dynarmic)