stmhal/mpconfigport.h: Remove config of PY_THREAD_GIL to use default.

dpgeorge · dpgeorge · commit c064f0a36a69 · 2017-06-14T14:47:53.000+10:00
The default for the GIL is to enable it if threading is enabled, and this
is the recommended way to use threading with the stmhal port.
diff --git a/stmhal/mpconfigport.h b/stmhal/mpconfigport.h
@@ -108,7 +108,6 @@
 #endif
 #define MICROPY_PY_UERRNO           (1)
 #define MICROPY_PY_THREAD           (0)
-#define MICROPY_PY_THREAD_GIL       (0)
 
 // extended modules
 #define MICROPY_PY_UCTYPES          (1)
