build: drop deprecated build tags

src/examples/can/feather-m4-can.go

@@ -1,5 +1,4 @@
 //go:build feather_m4_can
-// +build feather_m4_can
 
 package main
 

src/examples/caninterrupt/feather-m4-can.go

@@ -1,5 +1,4 @@
 //go:build feather_m4_can
-// +build feather_m4_can
 
 package main
 

src/examples/dac/circuitplay_express.go

@@ -1,5 +1,4 @@
 //go:build circuitplay_express
-// +build circuitplay_express
 
 package main
 

src/examples/dac/pyportal.go

@@ -1,5 +1,4 @@
 //go:build pyportal
-// +build pyportal
 
 package main
 

src/examples/pininterrupt/circuitplay-express.go

@@ -1,5 +1,4 @@
 //go:build circuitplay_express
-// +build circuitplay_express
 
 package main
 

src/examples/pininterrupt/pca10040.go

@@ -1,5 +1,4 @@
 //go:build pca10040
-// +build pca10040
 
 package main
 

src/examples/pininterrupt/stm32.go

@@ -1,5 +1,4 @@
 //go:build stm32
-// +build stm32
 
 package main
 

src/examples/pininterrupt/wioterminal.go

@@ -1,5 +1,4 @@
 //go:build wioterminal
-// +build wioterminal
 
 package main
 

src/examples/pwm/arduino-mega1280.go

@@ -1,5 +1,4 @@
 //go:build arduino_mega1280
-// +build arduino_mega1280
 
 package main
 

src/examples/pwm/arduino.go

@@ -1,5 +1,4 @@
 //go:build arduino
-// +build arduino
 
 package main
 

src/examples/pwm/bluepill.go

@@ -1,5 +1,4 @@
 //go:build bluepill
-// +build bluepill
 
 package main
 

src/examples/pwm/feather-m4.go

@@ -1,5 +1,4 @@
 //go:build feather_m4
-// +build feather_m4
 
 package main
 

src/examples/pwm/itsybitsy-m0.go

@@ -1,5 +1,4 @@
 //go:build itsybitsy_m0
-// +build itsybitsy_m0
 
 package main
 

src/examples/pwm/itsybitsy-m4.go

@@ -1,5 +1,4 @@
 //go:build itsybitsy_m4
-// +build itsybitsy_m4
 
 package main
 

src/examples/pwm/nucleo-f722ze.go

@@ -1,5 +1,4 @@
 //go:build stm32f7
-// +build stm32f7
 
 package main
 

src/examples/pwm/nucleo-l031k6.go

@@ -1,5 +1,4 @@
 //go:build stm32l0
-// +build stm32l0
 
 package main
 

src/examples/pwm/nucleo-l432kc.go

@@ -1,5 +1,4 @@
 //go:build stm32l4
-// +build stm32l4
 
 package main
 

src/examples/pwm/nucleo-l552ze.go

@@ -1,5 +1,4 @@
 //go:build stm32l5
-// +build stm32l5
 
 package main
 

src/examples/pwm/pico.go

@@ -1,5 +1,4 @@
 //go:build pico
-// +build pico
 
 package main
 

src/examples/pwm/stm32f4disco.go

@@ -1,5 +1,4 @@
 //go:build stm32f4disco
-// +build stm32f4disco
 
 package main