ICU-20390 Removes duplicate and obsolete .cpyskip.txt file

in tools/scripts/cpysearch/ directory. The actual .cpyskip.txt file is
now on top level of the repository. Updated readme.txt accordingly.

tools/scripts/cpysearch/.cpyskip.txt

@@ -1,101 +0,0 @@
-#
-# Copyright (C) 2017 and later: Unicode, Inc. and others.
-# License & terms of use: http://www.unicode.org/copyright.html
-#
-# Copyright (c) 2005-2011 International Business Machines
-# Corporation and others. All Rights Reserved.
-## see NOTE below.
-## Also see: http://icu-project.org/copyright-scan.html
-#
-# suffix matches - start with '*'.  They are turned into as RE, '.brk$'
-*.brk
-*.bz2
-*.class
-*.classpath
-*.csproj
-*.cvsignore
-*.dat
-*.DS_Store
-*.doc
-*.gif
-*.gz
-*.ico
-*.icu
-*.intaglio
-*.jar
-*.jpg
-*.launch
-*.nrm
-*.odp
-*.otf
-*.pdf
-*.png
-*.ppt
-*.prefs
-*.project
-*.res
-*.rtf
-*.sln
-*.sxd
-*.sxg
-*.sxw
-*.tri2
-*.vcproj
-*.vcxproj
-*.vcxproj.filters
-*.zip
-
-# UnicodeData.txt does not have any header.
-*/UnicodeData.txt
-
-#
-# ICU4C 
-#
-icu4c/source/aclocal.m4
-icu4c/source/config.guess
-icu4c/source/config.log
-icu4c/source/config.status
-icu4c/source/config.sub
-icu4c/source/install-sh
-icu4c/source/extra/uconv/samples/*
-icu4c/source/samples/layout/Sample.txt
-icu4c/source/samples/ucnv/data01.txt
-icu4c/source/samples/ufortune/resources/res-file-list.txt
-icu4c/source/test/testdata/ConverterSelectorTestUTF8.txt
-icu4c/source/test/testdata/encoded.utf16be
-icu4c/source/test/testdata/idna_conf.txt
-icu4c/source/test/testdata/ra.xlf
-icu4c/source/test/testdata/re_tests.txt
-icu4c/source/test/thaitest/space.txt
-icu4c/source/tools/tzcode/asctime.c
-icu4c/source/tools/tzcode/ialloc.c
-icu4c/source/tools/tzcode/localtime.c
-icu4c/source/tools/tzcode/private.h
-icu4c/source/tools/tzcode/scheck.c
-icu4c/source/tools/tzcode/tzfile.h
-icu4c/source/tools/tzcode/tzselect.ksh
-icu4c/source/tools/tzcode/zdump.c
-icu4c/source/tools/tzcode/zic.c
-#
-# ICU4J
-#
-icu4j/eclipse-build/pdebuild/allElements.xml
-icu4j/eclipse-build/pdebuild/customTargets.xml
-icu4j/main/tests/core/src/com/ibm/icu/dev/data/IDNATestInput.txt
-icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode/confusablesWholeScript.txt
-icu4j/main/tests/core/src/com/ibm/icu/dev/data/unicode/UnicodeData.txt
-icu4j/main/tests/core/src/com/ibm/icu/dev/test/duration/testdata/*
-icu4j/perf-tests/data/conversion/*
-#
-# tools
-#
-tools/trac/IcuCodeTools/*
-tools/unicodetools/*
-#
-# vendor
-#
-vendor/double-conversion/upstream/*
-#
-# git
-#
-.git/*

tools/scripts/cpysearch/readme.txt

@@ -10,12 +10,9 @@ cpysearch.pl  searches for files modified this year that don't have the
 
 cpyscan.pl    searches for all files that don't have any copyright
 
-cpyskip.txt  is part of the ignore list. Download the latest from
-   http://source.icu-project.org/cpyskip.txt
+.cpyskip.txt  is part of the ignore list. It resides as hidden file on
+  the top level of the repsoitory. Download the latest from
+    https://raw.githubusercontent.com/unicode-org/icu/master/.cpyskip.txt
 
 more docs on copyright scan at:
    http://site.icu-project.org/processes/copyright-scan
-
-
-Have fun!
-weiv