Revert "Introduce KTLS based http downoader API stub"

This reverts commit a256864c84.

app/src/main/cpp/CMakeLists.txt

@@ -63,5 +63,5 @@ FetchContent_MakeAvailable(libarchive)
 include_directories(${libarchive_SOURCE_DIR}/libarchive)
 
 # Build and link our app's native lib
-add_library(${PROJECT_NAME} SHARED archive.c gifutils.c http_downloader.c natsort/strnatcmp.c)
+add_library(${PROJECT_NAME} SHARED archive.c gifutils.c natsort/strnatcmp.c)
 target_link_libraries(${PROJECT_NAME} archive_static log)

app/src/main/cpp/http_downloader.c

@@ -1,13 +0,0 @@
-#include <jni.h>
-
-// This JNI function makes https call and save responseBody directly to filesystem to avoid copy on JVM heap
-JNIEXPORT jlong JNICALL
-Java_com_hippo_ehviewer_spider_SpiderDenKt_makeHttpsCallAndSaveToFd(JNIEnv *env, jclass clazz,jstring url, jboolean do_sni, jint fd) {
-    // TODO: implement makeHttpsCallAndSaveToFd()
-}
-
-// Is KTLS supported? if not, we maybe use [TLSChannel]https://github.com/marianobarrios/tls-channel and do DirectByteBuffer IO
-JNIEXPORT jboolean JNICALL
-Java_com_hippo_ehviewer_spider_SpiderDenKt_kernelSupportKTLS(JNIEnv *env, jclass clazz) {
-    // TODO: implement kernelSupportKTLS()
-}

app/src/main/java/com/hippo/ehviewer/spider/SpiderDen.kt

@@ -275,6 +275,3 @@ fun GalleryInfo.putToDownloadDir() {
     val dirname = FileUtils.sanitizeFilename("$gid-$title")
     EhDB.putDownloadDirname(gid, dirname)
 }
-
-private external fun makeHttpsCallAndSaveToFd(url: String, doSni: Boolean, fd: Int): Long
-private external fun kernelSupportKTLS(): Boolean