fix replaces cannot contain an empty string

deoplete/.SRCINFO

@@ -1,7 +1,7 @@
 pkgbase = deoplete
 	pkgdesc = deoplete completion plugin for neovim
 	pkgver = 6.1
-	pkgrel = 1
+	pkgrel = 2
 	url = https://github.com/Shougo/deoplete.nvim
 	install = deoplete.install
 	arch = any
@@ -14,9 +14,7 @@ pkgbase = deoplete
 	optdepends = vim-hug-neovim-rpc: vim support
 	provides = deoplete
 	conflicts = deoplete-git
-	replaces = 
 	source = deoplete-6.1.tar.gz::https://github.com/Shougo/deoplete.nvim/archive/6.1.tar.gz
 	sha512sums = 57e867b3ea7cf8d35655fcbe66b98641cc083d91173d55a13461c896365a47272cc28acd9b5231269e778863b99a4aa9cff90adc603f0c14e62e6ae8cc54b8b3
 
 pkgname = deoplete
-

deoplete/PKGBUILD

@@ -12,7 +12,7 @@ _neovim="n"
 _name='deoplete'
 pkgname="${_name}"
 pkgver=6.1
-pkgrel=1
+pkgrel=2
 pkgdesc="deoplete completion plugin for neovim"
 arch=('any')
 url="https://github.com/Shougo/deoplete.nvim"
@@ -26,7 +26,7 @@ optdepends=('vim: vim support'
 makedepends=('git') 
 provides=('deoplete')
 conflicts=('deoplete-git')
-replaces=('')
+replaces=()
 backup=()
 options=()
 install="${_name}.install"