remove unused reference

Author: Natalie Ho

documentation/asciidoc/microcontrollers/silicon/rp2040.adoc

@@ -68,7 +68,7 @@ For many use cases where minimal current draw is required, the best option is to
 
 === RP2040-based Boards
 
-Designed by Raspberry Pi as both a development board, and as a reference design, the xref:pico-series.adoc[Raspberry Pi Pico 1] is a family of RP2040-based boards. The Pico family currently consists of Raspberry Pi Pico (far left), Pico H (left), Pico W (right), and Pico WH (far right).
+Designed by Raspberry Pi as both a development board, and as a reference design, the xref:pico-series.adoc[Raspberry Pi Pico 1] is a family of RP2040-based boards.
 
 The design files for Raspberry Pi Pico and Pico W are available openly, with no limitations.