Remove the note about new information being added when the preview of SDK 4 comes out (#79)

Remove SDK 4 update note

There is a note on the hardware info page that new information will be added
when the firest preview version of SDK 4.0 is released.

That happened about 9 years ago :p

Signed-off-by: Radostin Rusev <[email protected]>

Author: radostin04

source/_guides/tools-and-resources/hardware-information.md

@@ -31,7 +31,4 @@ The table below details the differences between hardware platforms:
 
 See
 {% guide_link best-practices/building-for-every-pebble#available-defines-and-macros "Available Defines and Macros" %}
-for a complete list of compile-time defines available.
-
-**NOTE:** We'll be updating the "Building for Every Pebble Guide" and "Available
-Defines and Macros" list when we release the first preview version of SDK 4.0.
+for a complete list of compile-time defines available.