Atsumaru: Fix image loading (#5971)

Fix images loading

src/en/atsumaru/build.gradle

@@ -1,7 +1,7 @@
 ext {
     extName = 'Atsumaru'
     extClass = '.Atsumaru'
-    extVersionCode = 1
+    extVersionCode = 2
     isNsfw = true
 }
 

src/en/atsumaru/src/eu/kanade/tachiyomi/extension/en/atsumaru/Atsumaru.kt

@@ -30,9 +30,6 @@ class Atsumaru : HttpSource() {
         .rateLimit(2)
         .build()
 
-    override fun headersBuilder() = super.headersBuilder()
-        .add("Referer", "$baseUrl/")
-
     private fun apiHeadersBuilder() = headersBuilder().apply {
         add("Accept", "*/*")
         add("Host", apiUrl.toHttpUrl().host)