remove a great many submodules

.gitmodules

@@ -1,45 +1,12 @@
-[submodule "vendor/freetype"]
-	path = vendor/freetype
-	url = https://github.com/freetype/freetype.git
-[submodule "vendor/tracy"]
-	path = vendor/tracy
-	url = https://github.com/wolfpld/tracy.git
 [submodule "vendor/mach-sdk/sdk-linux-aarch64"]
 	path = vendor/mach-sdk/sdk-linux-aarch64
 	url = https://github.com/hexops/sdk-linux-aarch64.git
-[submodule "vendor/zlib"]
-	path = vendor/zlib
-	url = https://github.com/madler/zlib.git
-[submodule "vendor/libpng"]
-	path = vendor/libpng
-	url = https://github.com/glennrp/libpng.git
-[submodule "vendor/utf8proc"]
-	path = vendor/utf8proc
-	url = https://github.com/JuliaStrings/utf8proc.git
 [submodule "vendor/harfbuzz"]
 	path = vendor/harfbuzz
 	url = https://github.com/harfbuzz/harfbuzz.git
-[submodule "vendor/zig-libxml2"]
-	path = vendor/zig-libxml2
-	url = https://github.com/mitchellh/zig-libxml2.git
-[submodule "vendor/cimgui"]
-	path = vendor/cimgui
-	url = https://github.com/cimgui/cimgui.git
-[submodule "vendor/zig-js"]
-	path = vendor/zig-js
-	url = https://github.com/mitchellh/zig-js.git
-[submodule "vendor/zig-objc"]
-	path = vendor/zig-objc
-	url = https://github.com/mitchellh/zig-objc.git
-[submodule "vendor/libxev"]
-	path = vendor/libxev
-	url = https://github.com/mitchellh/libxev.git
 [submodule "vendor/mach-sdk/sdk-linux-x86_64"]
 	path = vendor/mach-sdk/sdk-linux-x86_64
 	url = https://github.com/hexops/sdk-linux-x86_64.git
-[submodule "vendor/mach-glfw"]
-	path = vendor/mach-glfw
-	url = https://github.com/mitchellh/mach-glfw.git
 [submodule "vendor/libxml2"]
 	path = vendor/libxml2
 	url = https://github.com/GNOME/libxml2.git