Remove Altium libraries

They are now located at https://lab.nexedi.com/nexedi/altium-lib

README.md

@@ -40,11 +40,6 @@ In order to do a full functional product, you will need all those components:
    * 4600 MHz - 5000 MHz, part of N79
  * `MiniPCIexpressCard`: *ALTIUM PROJECT*, miniPCIe adaptator PCB
  * `splitter30dB`: *ALTIUM PROJECT*, 30dB directional splitter/coupler PCB
- * `AltiumLib`: Lib files and important files for Altium
-   * `*.PcbLib`: contains footprint for components
-   * `*.SchLib`: contains schematic for components
-   * `LowPwrLTE.RUL`: PCB checking rules for
-   * `Stack8Layers.ods`: description of the PCB stack with impedance information
  * `tools`: directory containing useful tools
 
 Please note that all directories containing an *ALTIUM PROJECT* is organised like this:
@@ -61,6 +56,7 @@ Please note that all directories containing an *ALTIUM PROJECT* is organised lik
      * `Pick Place`: text files for pick and place
      * `Schematic Print`: the PDF of the schematic for each variation of the board
 
+Please note also that Altium libraries are stored in another repository https://lab.nexedi.com/nexedi/altium-lib.
 
 ## FAQ