diff --git a/pkgs/applications/networking/browsers/firefox/fix-pa-context-connect-retval.patch b/pkgs/applications/networking/browsers/firefox/fix-pa-context-connect-retval.patch
deleted file mode 100644
index 1c3c32948944..000000000000
--- a/pkgs/applications/networking/browsers/firefox/fix-pa-context-connect-retval.patch
+++ /dev/null
@@ -1,26 +0,0 @@
-Yep, it's a "return code was ignored" bug.
-diff --git a/media/libcubeb/src/cubeb_pulse.c b/media/libcubeb/src/cubeb_pulse.c
-index aaaaaaaaaaa..bbbbbbbbbbb 100644
---- a/media/libcubeb/src/cubeb_pulse.c
-+++ b/media/libcubeb/src/cubeb_pulse.c
-@@ -473,6 +473,8 @@
- static int
- pulse_context_init(cubeb * ctx)
- {
-+  int r;
-+
-   if (ctx->context) {
-     assert(ctx->error == 1);
-     pulse_context_destroy(ctx);
-@@ -486,9 +488,9 @@
-   WRAP(pa_context_set_state_callback)(ctx->context, context_state_callback, ctx);
- 
-   WRAP(pa_threaded_mainloop_lock)(ctx->mainloop);
--  WRAP(pa_context_connect)(ctx->context, NULL, 0, NULL);
-+  r = WRAP(pa_context_connect)(ctx->context, NULL, 0, NULL);
- 
--  if (wait_until_context_ready(ctx) != 0) {
-+  if (r < 0 || wait_until_context_ready(ctx) != 0) {
-     WRAP(pa_threaded_mainloop_unlock)(ctx->mainloop);
-     pulse_context_destroy(ctx);
-     ctx->context = NULL;
diff --git a/pkgs/applications/networking/browsers/firefox/no-buildconfig.patch b/pkgs/applications/networking/browsers/firefox/no-buildconfig.patch
deleted file mode 100644
index de278152f978..000000000000
--- a/pkgs/applications/networking/browsers/firefox/no-buildconfig.patch
+++ /dev/null
@@ -1,25 +0,0 @@
-diff -ru -x '*~' firefox-55.0.3-orig/docshell/base/nsAboutRedirector.cpp firefox-55.0.3/docshell/base/nsAboutRedirector.cpp
---- firefox-55.0.3-orig/docshell/base/nsAboutRedirector.cpp	2017-07-31 18:20:51.000000000 +0200
-+++ firefox-55.0.3/docshell/base/nsAboutRedirector.cpp	2017-09-26 22:02:00.814151731 +0200
-@@ -36,10 +36,6 @@
-     nsIAboutModule::ALLOW_SCRIPT
-   },
-   {
--    "buildconfig", "chrome://global/content/buildconfig.html",
--    nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT
--  },
--  {
-     "checkerboard", "chrome://global/content/aboutCheckerboard.xhtml",
-     nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
-       nsIAboutModule::ALLOW_SCRIPT
-diff -ru -x '*~' firefox-55.0.3-orig/toolkit/content/jar.mn firefox-55.0.3/toolkit/content/jar.mn
---- firefox-55.0.3-orig/toolkit/content/jar.mn	2017-07-31 18:20:52.000000000 +0200
-+++ firefox-55.0.3/toolkit/content/jar.mn	2017-09-26 22:01:42.383350314 +0200
-@@ -40,7 +40,6 @@
-    content/global/plugins.css
-    content/global/browser-child.js
-    content/global/browser-content.js
--*   content/global/buildconfig.html
-    content/global/buildconfig.css
-    content/global/contentAreaUtils.js
-    content/global/datepicker.xhtml
diff --git a/pkgs/applications/networking/browsers/firefox/packages.nix b/pkgs/applications/networking/browsers/firefox/packages.nix
index ab4e09a3add7..b94a33bfa871 100644
--- a/pkgs/applications/networking/browsers/firefox/packages.nix
+++ b/pkgs/applications/networking/browsers/firefox/packages.nix
@@ -1,16 +1,7 @@
 { config, lib, callPackage, fetchurl }:
 
 let
-
   common = opts: callPackage (import ./common.nix opts) {};
-
-  # Needed on older branches since rustc: 1.32.0 -> 1.33.0
-  missing-documentation-patch = fetchurl {
-    name = "missing-documentation.patch";
-    url = "https://aur.archlinux.org/cgit/aur.git/plain/deny_missing_docs.patch"
-        + "?h=firefox-esr&id=03bdd01f9cf";
-    sha256 = "1i33n3fgwc8d0v7j4qn7lbdax0an6swar12gay3q2nwrhg3ic4fb";
-  };
 in
 
 rec {