Update package version to 2.15.3

source.sh

@@ -2,13 +2,6 @@
 # BPM Expects the source code to be extracted into the automatically created 'source' directory which can be accessed using $BPM_SOURCE
 # BPM Expects the output files to be present in the automatically created 'output' directory which can be accessed using $BPM_OUTPUT
 
-# The prepare function is executed in the root of the temp directory
-# This function is used for putting downloaded files to the correct location or applying patches
-prepare() {
-  cd "$BPM_SOURCE"
-  patch -Np1 -i "$BPM_WORKDIR"/0001-catalog-Free-xmlCatalogResolveCache-on-cleanup.patch
-}
-
 # The build function is executed in the source directory
 # This function is used to compile the source code
 build() {