Update loom to 0.6

root.gradle.kts

@@ -2,7 +2,7 @@ import groovy.json.JsonOutput
 import java.io.ByteArrayOutputStream
 
 plugins {
-    id("fabric-loom") version "0.5-SNAPSHOT" apply false
+    id("fabric-loom") version "0.6-SNAPSHOT" apply false
     id("com.replaymod.preprocess") version "3d85a00"
     id("com.github.hierynomus.license") version "0.15.0"
 }
@@ -25,11 +25,6 @@ if (gitDescribe().endsWith("*")) {
 
 group = "com.replaymod"
 
-// Loom tries to find the active mixin version by recursing up to the root project and checking each project's
-// compileClasspath and build script classpath (in that order). Since we've loom in our root project's classpath,
-// loom will only find it after checking the root project's compileClasspath (which doesn't exist by default).
-configurations.register("compileClasspath")
-
 val shadowJar by tasks.creating(Copy::class) {
     into("$buildDir/libs")
 }