main/lame: remove duplicates in secfixes comment

CVE-2017-9410, CVE-2017-9411, CVE-2017-9412, CVE-2015-9099 were all
fixed in 3.99.5-r6.

ref #11914

main/lame/APKBUILD

@@ -12,11 +12,6 @@ source="https://downloads.sourceforge.net/project/lame/lame/$pkgver/$pkgname-$pk
 builddir="$srcdir"/$pkgname-$pkgver
 
 # secfixes:
-#   3.100-r0:
-#     - CVE-2017-9410
-#     - CVE-2017-9411
-#     - CVE-2017-9412
-#     - CVE-2015-9099
 #   3.99.5-r6:
 #     - CVE-2015-9099
 #     - CVE-2015-9100