diff --git a/native_client_sdk/src/libraries/libjpeg/library.dsc b/native_client_sdk/src/libraries/libjpeg/library.dsc
deleted file mode 100644
index a6579e12bbda62..00000000000000
--- a/native_client_sdk/src/libraries/libjpeg/library.dsc
+++ /dev/null
@@ -1,88 +0,0 @@
-{
-  'DISABLE': True,
-  'TOOLS': ['newlib', 'glibc', 'bionic', 'linux', 'win'],
-  'SEARCH': [
-    '../../../../third_party/libjpeg',
-  ],
-  'TARGETS': [
-    {
-      'NAME' : 'libjpeg',
-      'TYPE' : 'lib',
-      'INCLUDES': ['../../include/libjpeg'],      
-      'SOURCES' : [
-        'jcapimin.c',
-        'jcapistd.c',
-        'jccoefct.c',
-        'jccolor.c',
-        'jcdctmgr.c',
-        'jchuff.c',
-        'jcinit.c',
-        'jcmainct.c',
-        'jcmarker.c',
-        'jcmaster.c',
-        'jcomapi.c',
-        'jcparam.c',
-        'jcphuff.c',
-        'jcprepct.c',
-        'jcsample.c',
-        'jdapimin.c',
-        'jdapistd.c',
-        'jdatadst.c',
-        'jdatasrc.c',
-        'jdcoefct.c',
-        'jdcolor.c',
-        'jddctmgr.c',
-        'jdhuff.c',
-        'jdinput.c',
-        'jdmainct.c',
-        'jdmarker.c',
-        'jdmaster.c',
-        'jdmerge.c',
-        'jdphuff.c',
-        'jdpostct.c',
-        'jdsample.c',
-        'jerror.c',
-        'jfdctflt.c',
-        'jfdctfst.c',
-        'jfdctint.c',
-        'jidctflt.c',
-        'jidctfst.c',
-        'jidctint.c',
-        'jidctred.c',
-        'jmemmgr.c',
-        'jmemnobs.c',
-        'jquant1.c',
-        'jquant2.c',
-        'jutils.c',
-      ],
-    }
-  ],
-  'HEADERS': [
-    {
-      'DEST': 'include/libjpeg',
-      'FILES': [
-        'jchuff.h',
-        'jconfig.h',
-        'jdct.h',
-        'jdhuff.h',
-        'jerror.h',
-        'jinclude.h',
-        'jmemsys.h',
-        'jmorecfg.h',
-        'jpegint.h',
-        'jpeglib.h',
-        'jpeglibmangler.h',
-        'jversion.h',
-      ],
-    }
-  ],
-  'DATA': [
-    'LICENSE',
-    'README',
-    'README.chromium',
-  ],
-  'DEST': 'src',
-  'NAME': 'libjpeg',
-  'EXPERIMENTAL': True,
-}
-
diff --git a/native_client_sdk/src/libraries/zlib/library.dsc b/native_client_sdk/src/libraries/zlib/library.dsc
deleted file mode 100644
index 422e01344eeb64..00000000000000
--- a/native_client_sdk/src/libraries/zlib/library.dsc
+++ /dev/null
@@ -1,57 +0,0 @@
-{
-  'DISABLE': True,
-  'TOOLS': ['newlib', 'glibc',  'bionic', 'linux', 'win'],
-  'SEARCH': [
-    '../../../../third_party/zlib',
-  ],
-  'TARGETS': [
-    {
-      'NAME' : 'zlib',
-      'TYPE' : 'lib',
-      'INCLUDES': ['../../include/zlib'],      
-      'SOURCES' : [
-        'adler32.c',
-        'compress.c',
-        'contrib',
-        'crc32.c',
-        'deflate.c',
-        'gzio.c',
-        'infback.c',
-        'inffast.c',
-        'inflate.c',
-        'inftrees.c',
-        'trees.c',
-        'uncompr.c',
-        'zutil.c',
-      ],
-    }
-  ],
-  'HEADERS': [
-    {
-      'DEST': 'include/zlib',
-      'FILES': [
-        'crc32.h',
-        'deflate.h',
-        'inffast.h',
-        'inffixed.h',
-        'inflate.h',
-        'inftrees.h',
-        'mozzconf.h',
-        'trees.h',
-        'zconf.h',
-        'zlib.h',
-        'zutil.h',
-      ],
-    },
-  ],
-  'DATA': [
-    'LICENSE',
-    'google.patch',
-    'mixed-source.patch',
-    'README.chromium',
-  ],
-  'DEST': 'src',
-  'NAME': 'zlib',
-  'EXPERIMENTAL': True,
-}
-