chore: Update mozconfig to enable LTO and remove unused options

.github/workflows/src/windows_mozconfig

@@ -10,8 +10,6 @@ export WINEDEBUG=-all
 ac_add_options --target=x86_64-pc-mingw32
 
 export MOZ_STUB_INSTALLER=1
-export MOZ_MAINTENANCE_SERVICE=
-
 export MOZ_PKG_FORMAT=TAR
 
 export CROSS_BUILD=1

configs/common/mozconfig

@@ -15,6 +15,7 @@ export MOZ_BRANDING_DIRECTORY=${brandingDir}
 export MOZ_OFFICIAL_BRANDING_DIRECTORY=${brandingDir}
 export MOZ_MACBUNDLE_ID=${appId}
 export MOZ_DISTRIBUTION_ID=${appId}
+export MOZ_MACBUNDLE_NAME="${name}.app"
 
 # Uncomment if builds are too resource hungry
 # mk_add_options MOZ_MAKE_FLAGS="-j4"
@@ -22,9 +23,11 @@ export MOZ_DISTRIBUTION_ID=${appId}
 
 # Misc
 export MOZ_STUB_INSTALLER=1
-export MOZ_INCLUDE_SOURCE_INFO=1
 export MOZ_SOURCE_REPO=https://github.com/zen-browser/desktop
 export MOZ_SOURCE_CHANGESET=${changeset}
+if ! test "$ZEN_RELEASE"; then
+  export MOZ_INCLUDE_SOURCE_INFO=1
+fi
 
 ac_add_options --enable-bootstrap
 
@@ -80,5 +83,7 @@ if test "$ZEN_CROSS_COMPILING"; then
   ac_add_options --target=x86_64-pc-linux-gnu
 fi
 
+export MOZ_APP_UA_NAME="Firefox"
+
 # ALWAYS MANTAIN ONE LINE BREAK AT THE END OF THIS FILE
 

src/netwerk/protocol/http/nsHttpHandler-cpp.patch

@@ -1,19 +0,0 @@
-diff --git a/netwerk/protocol/http/nsHttpHandler.cpp b/netwerk/protocol/http/nsHttpHandler.cpp
-index 0ddb378e2b2ca20edc9cf7494d80d308d8cf51eb..f311cf92a16d652e24d479038f2ccad5f19b27d4 100644
---- a/netwerk/protocol/http/nsHttpHandler.cpp
-+++ b/netwerk/protocol/http/nsHttpHandler.cpp
-@@ -861,12 +861,12 @@ void nsHttpHandler::BuildUserAgent() {
-   mUserAgent += mProductSub;
- 
-   bool isFirefox = mAppName.EqualsLiteral("Firefox");
--  if (isFirefox || mCompatFirefoxEnabled) {
-+  if (isFirefox || mCompatFirefoxEnabled || true) {
-     // "Firefox/x.y" (compatibility) app token
-     mUserAgent += ' ';
-     mUserAgent += mCompatFirefox;
-   }
--  if (!isFirefox) {
-+  if (!isFirefox && false) {
-     // App portion
-     mUserAgent += ' ';
-     mUserAgent += mAppName;