Remove AVR32 target variants, the current entries refers to CHIPS which have the same CPU core, CHIP variant is defined elsewhere

target/Config.in.arch

@@ -184,18 +184,6 @@ config BR2_MIPS_ABI_none
 	  Unspecified ABI leaves ABI selection blank.
 endchoice
 
-choice
-	prompt "Target Architecture Variant"
-	depends on BR2_avr32
-config BR2_at32ap7000
-	bool "AT32AP7000"
-config BR2_at32ap7001
-	bool "AT32AP7001"
-config BR2_at32ap7002
-	bool "AT32AP7002"
-endchoice
-
-
 choice
 	prompt "Target Architecture Variant"
 	depends on BR2_sh