No bug: [mozhanress] Remove unused disable_signing config file; r=me DONTBUILD CLOSED TREE

--HG--
extra : rebase_source : 4fa4e6ff739d6ffe7a4d477fa1ffcd4a8e09d7eb
extra : amend_source : 67fd8da28bc8ced20fa15c0e26ef44d555527273

taskcluster/ci/build/linux.yml

@@ -51,7 +51,6 @@ linux64-nightly/opt:
         config:
             - builds/taskcluster_base_thunderbird.py
             - builds/releng_base_linux_64_builds.py
-            - disable_signing.py
             - taskcluster_nightly.py
         script: "mozharness/scripts/fx_desktop_build.py"
         need-xvfb: true
@@ -143,7 +142,6 @@ linux-nightly/opt:
         config:
             - builds/taskcluster_base_thunderbird.py
             - builds/releng_base_linux_32_builds.py
-            - disable_signing.py
             - taskcluster_nightly.py
         script: "mozharness/scripts/fx_desktop_build.py"
         need-xvfb: true

taskcluster/ci/build/macosx.yml

@@ -96,7 +96,6 @@ macosx64-nightly/opt:
         config:
             - builds/taskcluster_base_thunderbird.py
             - builds/releng_base_mac_64_cross_builds.py
-            - disable_signing.py
             - taskcluster_nightly.py
         script: "mozharness/scripts/fx_desktop_build.py"
         tooltool-downloads: internal

taskcluster/ci/build/windows.yml

@@ -60,7 +60,6 @@ win32-nightly/opt:
             - builds/taskcluster_base_windows.py
             - builds/taskcluster_base_win32.py
             - builds/taskcluster_sub_win32/opt.py
-            - disable_signing.py
             - taskcluster_nightly.py
     toolchains:
         - win64-clang-cl
@@ -159,7 +158,6 @@ win64-nightly/opt:
             - builds/taskcluster_base_windows.py
             - builds/taskcluster_base_win64.py
             - builds/taskcluster_sub_win64/opt.py
-            - disable_signing.py
             - taskcluster_nightly.py
     toolchains:
         - win64-clang-cl