Duplicate metamask font on Android assets.

### **Description**
Duplicate metamask font on Android assets.

### **Technical Details**
When cloning the repo I get this warning:

```
warning: the following paths have collided (e.g. case-sensitive paths
on a case-insensitive filesystem) and only one from the same
colliding group is in the working tree:

'android/app/src/main/assets/fonts/Metamask.ttf'
'android/app/src/main/assets/fonts/metamask.ttf'

```

I checked the md5 of the two files and it looks like they are the same file.

I think a possible solution can be to delete one of the ttf.
I suggest to keep the one starting with the capital letter just to stay aligned with the style of the other fonts contained in the same folder.

Before deleting the duplicate font file you should verify any case-sensitive dependence in the android app code.

Start with android/app/src/main/assets/fonts/Metamask.ttf and android/app/src/main/assets/fonts/metamask.ttf, then search the Android app code for references that depend on either filename or casing. Confirm the files are identical and that one name is not required; done means the duplicate is removed without case-collision warnings when cloning the repository.

Written by the indexing model from the issue text.