Merge pull request #160 from tlaurion/remove_outdated_flashing_guides

Installing-and-Configuring/Flashing-Guides/*: remove undocumented boards, remove redundant and invalid statements and point to general instructions, add todo.

Author: tlaurion

Installing-and-Configuring/Flashing-Guides/Clean-the-ME-firmware.md

@@ -19,6 +19,8 @@ More info: [Intel Active Management Technology](https://en.wikipedia.org/wiki/In
 How to disable/deactive most of it
 ===
 
+***ALL MAXIMIZED BOARDS DO THE NEUTERING AUTOMATICALLY WHEN YOU BUILD THE BOARD. SEE GENERAL BUILDING GUIDE***
+
 The ME firmware sits on the second SPI flash chip of the x230 (the 8MB one). We
  cannot remove it completely, otherwise the machine will shut itself off after
  30 minutes. We can, however, reduce it to the bare minimum necessary to keep it

Installing-and-Configuring/Flashing-Guides/kgpe-d16.md

@@ -7,7 +7,7 @@ parent: Step 2 - Flashing Guides
 grand_parent: Installing and configuring
 ---
 
-Lenovo X230 (Maximized)
+Lenovo X230 (Maximized) (applies to all 4mb+8mb SPI chips maximized boards)
 ===
 
 [X230 Hardware Maintenance Manual](https://web.archive.org/web/20201112030049/https://thinkpads.com/support/hmm/hmm_pdf/x230_x230i_hmm_en_0b48666_01.pdf)