PlatformIO: Make exceptions off by default #5538 (#5814)

Author: ivankravets

tools/platformio-build.py

@@ -70,6 +70,7 @@ def scons_patched_match_splitext(path, suffixes=None):
         "-U__STRICT_ANSI__",
         "-ffunction-sections",
         "-fdata-sections",
+        "-fno-exceptions",
         "-Wall"
     ],