Remove obsolete git BC2 scripts

git_bc2diff

@@ -1,5 +0,0 @@
-#!/bin/sh
-
-path1=$(cygpath -w "$1")
-path2=$(cygpath -w "$2")
-/cygdrive/c/apps/Beyond\ Compare\ 2/BC2.exe "$path1" "$path2" /title1=Base /leftreadonly

git_bc2merge

@@ -1,6 +0,0 @@
-#!/bin/sh
-
-local=$(cygpath -w "$1")
-remote=$(cygpath -w "$2")
-merged=$(cygpath -w "$3")
-/cygdrive/c/apps/Beyond\ Compare\ 2/BC2.exe "$local" "$remote" /title1=Local /title2=Remote /savetarget="$merged"