/execute in minecraft:overworld run tag @a remove test
/execute positioned ~ ~ ~ run tag @a remove test
/execute facing ~ ~ ~ run tag @a remove test
/execute anchored eyes run tag @a remove test

Error executing task on Server
java.lang.IllegalArgumentException: No such argument 'targets' exists on this command
at com.mojang.brigadier.context.CommandContext.getArgument(CommandContext.java:85)
	at dk.c(SourceFile:69)
	at dk.b(SourceFile:61)
	at yv.a(SourceFile:45)
	at yv$$Lambda$4078/1339114893.getSuggestions(Unknown Source)
	at com.mojang.brigadier.tree.ArgumentCommandNode.listSuggestions(ArgumentCommandNode.java:71)
	at com.mojang.brigadier.CommandDispatcher.getCompletionSuggestions(CommandDispatcher.java:596)
	at com.mojang.brigadier.CommandDispatcher.getCompletionSuggestions(CommandDispatcher.java:579)
	at abg.a(SourceFile:486)
	at sq.a(SourceFile:35)
	at sq.a(SourceFile:9)
	at ou.a(SourceFile:21)
	at ou$$Lambda$4993/1387570813.run(Unknown Source)
	at wj.run(SourceFile:18)
	at aol.c(SourceFile:144)
	at aop.c(SourceFile:23)
	at net.minecraft.server.MinecraftServer.b(SourceFile:760)
	at net.minecraft.server.MinecraftServer.c(SourceFile:155)
	at aol.y(SourceFile:118)
	at net.minecraft.server.MinecraftServer.bd(SourceFile:742)
	at net.minecraft.server.MinecraftServer.y(SourceFile:736)
	at aol.c(SourceFile:127)
	at net.minecraft.server.MinecraftServer.x(SourceFile:721)
	at net.minecraft.server.MinecraftServer.w(SourceFile:673)
	at net.minecraft.server.MinecraftServer.a(SourceFile:257)
	at net.minecraft.server.MinecraftServer$$Lambda$4426/253401363.run(Unknown Source)
	at java.lang.Thread.run(Thread.java:745)

/execute as @a positioned ~ ~ ~ run tag @a remove test