subprojects: Remove wrapper for the inih project

We can rely on git submodules to achieve this.

Signed-off-by: Ikey Doherty <ikey@solus-project.com>

subprojects/inih.wrap

@@ -1,5 +0,0 @@
-[wrap-git]
-directory=inih
-url=https://github.com/FeralInteractive/inih.git
-revision=head
-