Remove migrations tag, not needed anymore

internal/db/migrations/genmigrations/Makefile

@@ -2,7 +2,7 @@
 THIS_FILE := $(lastword $(MAKEFILE_LIST))
 
 migrations:
-	go run -tags genmigrations .
+	go run .
 	goimports -w ${GEN_BASEPATH}/internal/db/migrations
 
 .PHONY: migrations

internal/db/migrations/genmigrations/generate.go

@@ -1,5 +1,3 @@
-// +build genmigrations
-
 package main
 
 import (

internal/db/migrations/genmigrations/main.go

@@ -1,5 +1,3 @@
-// +build genmigrations
-
 package main
 
 func main() {