diff --git a/src/main/kotlin/com/noxcrew/posthog/internal/InstantSerializer.kt b/src/main/kotlin/com/noxcrew/posthog/internal/InstantSerializer.kt
deleted file mode 100644
index 6b10a19..0000000
--- a/src/main/kotlin/com/noxcrew/posthog/internal/InstantSerializer.kt
+++ /dev/null
@@ -1,26 +0,0 @@
-package com.noxcrew.posthog.internal
-
-import kotlinx.serialization.KSerializer
-import kotlinx.serialization.descriptors.PrimitiveKind
-import kotlinx.serialization.descriptors.PrimitiveSerialDescriptor
-import kotlinx.serialization.descriptors.SerialDescriptor
-import kotlinx.serialization.encoding.Decoder
-import kotlinx.serialization.encoding.Encoder
-import java.time.Instant
-
-/** Serializer for Java Instant objects using ISO8601. */
-internal object InstantSerializer : KSerializer<Instant> {
-    override val descriptor: SerialDescriptor =
-        PrimitiveSerialDescriptor(InstantSerializer::class.qualifiedName!!, PrimitiveKind.STRING)
-
-    override fun serialize(
-        encoder: Encoder,
-        value: Instant,
-    ) {
-        encoder.encodeString(value.toString())
-    }
-
-    override fun deserialize(decoder: Decoder): Instant {
-        return Instant.parse(decoder.decodeString())
-    }
-}
diff --git a/src/main/kotlin/com/noxcrew/posthog/internal/PostHogConstants.kt b/src/main/kotlin/com/noxcrew/posthog/internal/PostHogConstants.kt
deleted file mode 100644
index 8a11652..0000000
--- a/src/main/kotlin/com/noxcrew/posthog/internal/PostHogConstants.kt
+++ /dev/null
@@ -1,4 +0,0 @@
-package com.noxcrew.posthog.internal
-
-/** A collection of PostHog constants. */
-internal object PostHogConstants