Remove dokkaHtmlCollector from the build task

Gradle seems to re-run this every time, so Drone ended up building the
KDoc twice (once in the build stage and again in the publish stage).
Removing it from the build stage ensures Drone only builds KDoc once.

Signed-off-by: Graham <gpe@openrs2.dev>

build.gradle.kts

@@ -293,10 +293,6 @@ configure(subprojects.filter { it.isFree }) {
     }
 }
 
-tasks.build {
-    dependsOn(":dokkaHtmlCollector")
-}
-
 val rejectVersionRegex = Regex("(?i)[._-](?:alpha|beta|rc|cr|m|dev)")
 
 tasks.dependencyUpdates {