Remove -fno-strict-aliasing flag

The referenced bug was fixed by saving neon registers. That this had any
effect was coincidental.

Both chromium and Android build with clang and neither uses this flag.

Change-Id: I470247d6fd9226fc207b42a187105581a94badc3

configure

@@ -578,14 +578,6 @@ process_toolchain() {
         # check_add_cflags also adds to cxxflags. gtest does not do well with
         # -Wundef so add it explicitly to CFLAGS only.
         check_cflags -Wundef && add_cflags_only -Wundef
-        case ${CC} in
-          *clang*)
-              # libvpx and/or clang have issues with aliasing:
-              # https://code.google.com/p/webm/issues/detail?id=603
-              # work around them until they are fixed
-              check_add_cflags -fno-strict-aliasing
-          ;;
-        esac
         if enabled mips || [ -z "${INLINE}" ]; then
           enabled extra_warnings || check_add_cflags -Wno-unused-function
         fi