diff --git a/Overlays/jurecadc_overlay/f/flex/flex-2.6.3-GCCcore-9.3.0.eb b/Golden_Repo/f/flex/flex-2.6.3-GCCcore-9.3.0.eb
similarity index 100%
rename from Overlays/jurecadc_overlay/f/flex/flex-2.6.3-GCCcore-9.3.0.eb
rename to Golden_Repo/f/flex/flex-2.6.3-GCCcore-9.3.0.eb
diff --git a/Overlays/juwelsbooster_overlay/f/flex/flex-2.6.3-GCCcore-9.3.0.eb b/Overlays/juwelsbooster_overlay/f/flex/flex-2.6.3-GCCcore-9.3.0.eb
deleted file mode 100644
index 01ccbd6c324530c8c8fc69881012935f381b3c38..0000000000000000000000000000000000000000
--- a/Overlays/juwelsbooster_overlay/f/flex/flex-2.6.3-GCCcore-9.3.0.eb
+++ /dev/null
@@ -1,24 +0,0 @@
-name = 'flex'
-version = '2.6.3'
-
-homepage = 'http://flex.sourceforge.net/'
-description = """Flex (Fast Lexical Analyzer) is a tool for generating scanners. A scanner,
- sometimes called a tokenizer, is a program which recognizes lexical patterns in text.
-"""
-
-site_contacts = 'sc@fz-juelich.de'
-
-toolchain = {'name': 'GCCcore', 'version': '9.3.0'}
-toolchainopts = {'pic': True}
-
-sources = [SOURCELOWER_TAR_GZ]
-source_urls = ['https://github.com/westes/flex/releases/download/v%(version)s/']
-
-dependencies = [('Bison', '3.6.4')]
-
-# use same binutils version that was used when building GCC toolchain
-builddependencies = [('binutils', '2.34', '', SYSTEM)]
-
-parallel = 1
-
-moduleclass = 'lang'