Removing git submodule dependency

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "urtypes"]
-	path = src/vendor/urtypes
-	url = https://github.com/jreesun/urtypes.git

docs/manual_installation.md

@@ -147,15 +147,10 @@ Where `297` is the process id listed in the output above (it'll be different eac
 
 ### Download the SeedSigner code:
 ```
-git clone --recursive https://github.com/SeedSigner/seedsigner
+git clone https://github.com/SeedSigner/seedsigner
 cd seedsigner
 ```
 
-If you have already cloned in the past and just need to init/pull submodules:
-```
-git submodule update --init
-```
-
 If you want to run a specific branch within the main SeedSigner repo, switch to it with:
 ```
 git checkout yourtargetbranch

requirements.txt

@@ -7,4 +7,4 @@ qrcode==7.3.1
 RPi.GPIO==0.7.0
 six==1.16.0
 spidev==3.5
--e src/vendor/urtypes
+urtypes @ git+https://github.com/jreesun/urtypes.git@e0d0db277ec2339650343eaf7b220fffb9233241