Revert "examples: split asm.v to asm.amd64.v and asm.i386.v"

This reverts commit 74e73edac1.

examples/asm.amd64.v

@@ -1,19 +0,0 @@
-fn main() {
-	a := 100
-	b := 20
-	mut c := 0
-	asm amd64 {
-		mov rax, a
-		add rax, b
-		mov c, rax
-		; =r (c)
-		; r (a)
-		  r (b)
-	}
-	assert a == 100
-	assert b == 20
-	assert c == 120
-	println('a: $a') // 100
-	println('b: $b') // 20
-	println('c: $c') // 120
-}

examples/asm.i386.v

@@ -1,19 +0,0 @@
-fn main() {
-	a := 100
-	b := 20
-	mut c := 0
-	asm i386 {
-		mov eax, a
-		add eax, b
-		mov c, eax
-		; =r (c)
-		; r (a)
-		  r (b)
-	}
-	assert a == 100
-	assert b == 20
-	assert c == 120
-	println('a: $a') // 100
-	println('b: $b') // 20
-	println('c: $c') // 120
-}

examples/asm.v

@@ -0,0 +1,18 @@
+fn main() {
+	a := 100
+	b := 20
+	mut c := 0
+	$if amd64 {
+		asm amd64 {
+			mov eax, a
+			add eax, b
+			mov c, eax
+			; =r (c) // output
+			; r (a) // input
+			  r (b)
+		}
+	}
+	println('a: $a') // 100
+	println('b: $b') // 20
+	println('c: $c') // 120
+}