DEV: Remove a few unused icons (#14696)

DEV: Remove a few unused icons (#14696)

diff --git a/lib/svg_sprite/svg_sprite.rb b/lib/svg_sprite/svg_sprite.rb
index f4b1294..0b1c3b7 100644
--- a/lib/svg_sprite/svg_sprite.rb
+++ b/lib/svg_sprite/svg_sprite.rb
@@ -132,7 +132,6 @@ module SvgSprite
     "globe-americas",
     "hand-point-right",
     "hands-helping",
-    "heading",
     "heart",
     "history",
     "home",
@@ -176,7 +175,6 @@ module SvgSprite
     "search",
     "share",
     "shield-alt",
-    "shower",
     "sign-in-alt",
     "sign-out-alt",
     "signal",
@@ -184,7 +182,6 @@ module SvgSprite
     "star",
     "step-backward",
     "step-forward",
-    "stopwatch",
     "stream",
     "sync-alt",
     "sync",
@@ -201,7 +198,6 @@ module SvgSprite
     "toggle-off",
     "toggle-on",
     "trash-alt",
-    "tv",
     "undo",
     "unlink",
     "unlock",

GitHub sha: 689a3711c00cef0e694be25b2666fd83c740cd03

This commit appears in #14696 which was approved by eviltrout. It was merged by pmusaraj.