Revert "extract_utils: Fix makefile generation issues"

This reverts commit c982836ca6.
This breaks extracting from src in "src:dst", such as from a disk image.
Will be addressed in the cleanup commit that follows.

Change-Id: Iff84a926f0c3bf908320b43ba40235e0a89db644

build/tools/extract_utils.sh

@@ -655,7 +655,6 @@ function parse_file_list() {
 
         # if line starts with a dash, it needs to be packaged
         if [[ "$SPEC" =~ ^- ]]; then
-            SPEC=$(echo "${SPEC}" | sed 's/[^"]*://')
             PRODUCT_PACKAGES_LIST+=("${SPEC#-}")
             PRODUCT_PACKAGES_HASHES+=("$HASH")
         else