drop adb completion, provided by android-tools

PKGBUILD

@@ -2,7 +2,7 @@
 
 pkgname=bash-completion
 pkgver=2.3
-pkgrel=1
+pkgrel=2
 pkgdesc="Programmable completion for the bash shell"
 arch=('any')
 url="https://github.com/scop/bash-completion"
@@ -37,4 +37,7 @@ package() {
 
 # remove completions which overlap with util-linux
   rm "${pkgdir}/usr/share/bash-completion/completions"/{u,}mount
+
+# remove completions provided by android-tools
+  rm "${pkgdir}/usr/share/bash-completion/completions"/adb
 }