Remove more unused scripts

bash/sources/15_gpg-agent

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+which gpg-agent 2>&1 > /dev/null
+if [ $? -eq 0 ]; then
+    GPG_ENV="$HOME/.gnupg/environment"
+
+    function __start_agent {
+        gpg-agent --daemon > "${GPG_ENV}"
+        chmod 600 "${GPG_ENV}"
+        . "${GPG_ENV}" > /dev/null
+    }
+
+    if [ -f "${GPG_ENV}" ]; then
+        . "${GPG_ENV}" > /dev/null
+
+        gpg-agent > /dev/null 2>&1
+        [ "$?" -ne 0 ] && { __start_agent; }
+    else
+        __start_agent;
+    fi
+fi