message: configure: remove cflags that GCC warns are ignored for C++ source
diff: @@ -61,9 +61,6 @@ c.append('cflags', '-fno-builtin-malloc')
  c.append('cflags', '-fno-omit-frame-pointer')
  c.append('cflags', '-ffunction-sections')
  c.append('cflags', '-fdata-sections')
  -c.append('cflags', '-Werror=implicit-function-declaration')
  -c.append('cflags', '-Werror=implicit-int')
  -c.append('cflags', '-Werror=pointer-sign')
  c.append('cflags', '-Werror=pointer-arith')
  if platform != 'darwin':
  