Bugfix/fix redundant compiler flags (#658)

* Improved GCC compiler flags in ARM, OS, and test builds. Removed redundant flags, and made them consistent across various builds.

* Fixed redundant redeclaration of various functions detected by change in compiler flags.

* Fixed string truncation warning in bip-init detected by change in compiler flags.

* Fixed some set-but-not-used variables by creating dummy functions instead of using macros.

src/bacnet/bactext.h

@@ -65,12 +65,6 @@ extern "C" {
         const char *search_name,
         unsigned *found_index);
     BACNET_STACK_EXPORT
-    const char *bactext_notify_type_name(
-        unsigned index);
-    BACNET_STACK_EXPORT
-    const char *bactext_event_type_name(
-        unsigned index);
-    BACNET_STACK_EXPORT
     bool bactext_property_name_proprietary(
         unsigned index);
     BACNET_STACK_EXPORT