Remove testing/libfuzzer/BUILD.gn.

Clear the way to pull libfuzzer into this directory.

BUG=pdfium:1088

Change-Id: Ide4e8e26150dec87bc6303281b735d8b501c52ec
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/32897
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/testing/libfuzzer/BUILD.gn b/testing/libfuzzer/BUILD.gn
deleted file mode 100644
index 2d67f0b..0000000
--- a/testing/libfuzzer/BUILD.gn
+++ /dev/null
@@ -1,176 +0,0 @@
-# Copyright 2018 The PDFium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import("../../pdfium.gni")
-
-if (pdf_enable_xfa) {
-  group("pdf_bidi_fuzzer") {
-    deps = [
-      "../fuzzers/:pdf_bidi_fuzzer_src",
-    ]
-    testonly = true
-  }
-
-  group("pdf_cfx_barcode_fuzzer") {
-    deps = [
-      "../fuzzers/:pdf_cfx_barcode_fuzzer_src",
-    ]
-    testonly = true
-  }
-
-  if (pdf_enable_xfa_bmp) {
-    group("pdf_codec_bmp_fuzzer") {
-      deps = [
-        "../fuzzers/:pdf_codec_bmp_fuzzer_src",
-      ]
-      testonly = true
-    }
-  }
-
-  if (pdf_enable_xfa_gif) {
-    group("pdf_codec_gif_fuzzer") {
-      deps = [
-        "../fuzzers/:pdf_codec_gif_fuzzer_src",
-      ]
-      testonly = true
-    }
-
-    group("pdf_lzw_fuzzer") {
-      deps = [
-        "../fuzzers/:pdf_lzw_fuzzer_src",
-      ]
-      testonly = true
-    }
-  }
-
-  group("pdf_codec_jpeg_fuzzer") {
-    deps = [
-      "../fuzzers/:pdf_codec_jpeg_fuzzer_src",
-    ]
-    testonly = true
-  }
-
-  if (pdf_enable_xfa_png) {
-    group("pdf_codec_png_fuzzer") {
-      deps = [
-        "../fuzzers/:pdf_codec_png_fuzzer_src",
-      ]
-      testonly = true
-    }
-  }
-
-  if (pdf_enable_xfa_tiff) {
-    group("pdf_codec_tiff_fuzzer") {
-      deps = [
-        "../fuzzers/:pdf_codec_tiff_fuzzer_src",
-      ]
-      testonly = true
-    }
-  }
-
-  group("pdf_css_fuzzer") {
-    deps = [
-      "../fuzzers/:pdf_css_fuzzer_src",
-    ]
-    testonly = true
-  }
-
-  group("pdf_fm2js_fuzzer") {
-    deps = [
-      "../fuzzers/:pdf_fm2js_fuzzer_src",
-    ]
-    testonly = true
-  }
-
-  group("pdf_formcalc_fuzzer") {
-    deps = [
-      "../fuzzers/:pdf_formcalc_fuzzer_src",
-    ]
-    testonly = true
-  }
-}
-
-group("pdf_cmap_fuzzer") {
-  deps = [
-    "../fuzzers/:pdf_cmap_fuzzer_src",
-  ]
-  testonly = true
-}
-
-group("pdf_codec_a85_fuzzer") {
-  deps = [
-    "../fuzzers/:pdf_codec_a85_fuzzer_src",
-  ]
-  testonly = true
-}
-
-group("pdf_codec_fax_fuzzer") {
-  deps = [
-    "../fuzzers/:pdf_codec_fax_fuzzer_src",
-  ]
-  testonly = true
-}
-
-group("pdf_codec_icc_fuzzer") {
-  deps = [
-    "../fuzzers/:pdf_codec_icc_fuzzer_src",
-  ]
-  testonly = true
-}
-
-group("pdf_codec_jbig2_fuzzer") {
-  deps = [
-    "../fuzzers/:pdf_codec_jbig2_fuzzer_src",
-  ]
-  testonly = true
-}
-
-group("pdf_codec_rle_fuzzer") {
-  deps = [
-    "../fuzzers/:pdf_codec_rle_fuzzer_src",
-  ]
-  testonly = true
-}
-
-group("pdf_font_fuzzer") {
-  deps = [
-    "../fuzzers/:pdf_font_fuzzer_src",
-  ]
-  testonly = true
-}
-
-group("pdf_hint_table_fuzzer") {
-  deps = [
-    "../fuzzers/:pdf_hint_table_fuzzer_src",
-  ]
-  testonly = true
-}
-
-group("pdf_jpx_fuzzer") {
-  deps = [
-    "../fuzzers/:pdf_jpx_fuzzer_src",
-  ]
-  testonly = true
-}
-
-group("pdf_psengine_fuzzer") {
-  deps = [
-    "../fuzzers/:pdf_psengine_fuzzer_src",
-  ]
-  testonly = true
-}
-
-group("pdf_streamparser_fuzzer") {
-  deps = [
-    "../fuzzers/:pdf_streamparser_fuzzer_src",
-  ]
-  testonly = true
-}
-
-group("pdf_xml_fuzzer") {
-  deps = [
-    "../fuzzers/:pdf_xml_fuzzer_src",
-  ]
-  testonly = true
-}