Android: Remove "ndkPath" entry from sdk_definitions.json

Since a long while, an ndk within an Android SDK installation resides
under a subdirectory "ndk/<ndkversion>". The "ndk_path" entry in
sdk_definitions.json is therefore redundant, since the ndk version is
already present.

Qt 6.5+ will provide the ndk version number (see QTCREATORBUG-28629),
without such ndk_path, and therefore it is helpful to contruct the ndk
subpath directly from that version number. For all Qt versions.

This change removes the "ndkPath" entry and the code that handles it.

Task-number: QTCREATORBUG-28629
Change-Id: I5a8f204f87a53a610dbeb9d4c39633582ef209c1
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>

src/plugins/android/androidconstants.h

@@ -81,6 +81,7 @@ const Utils::Id AndroidAvdPath = "AndroidAvdPath";
 
 // SDK Tools
 const char cmdlineToolsName[] = "cmdline-tools";
+const char ndkPackageName[] = "ndk";
 
 } // namespace Constants;
 } // namespace Android