libutils: remove unused strzcmp16_h_n.

Bug: N/A
Test: builds
Change-Id: I864bfb3597da76cd0a4fecce67e39d5d81538764
diff --git a/libutils/Unicode.cpp b/libutils/Unicode.cpp
index e00fb81..82f650d 100644
--- a/libutils/Unicode.cpp
+++ b/libutils/Unicode.cpp
@@ -340,27 +340,6 @@
            : 0);
 }
 
-int strzcmp16_h_n(const char16_t *s1H, size_t n1, const char16_t *s2N, size_t n2)
-{
-    const char16_t* e1 = s1H+n1;
-    const char16_t* e2 = s2N+n2;
-
-    while (s1H < e1 && s2N < e2) {
-        const char16_t c2 = ntohs(*s2N);
-        const int d = (int)*s1H++ - (int)c2;
-        s2N++;
-        if (d) {
-            return d;
-        }
-    }
-
-    return n1 < n2
-        ? (0 - (int)ntohs(*s2N))
-        : (n1 > n2
-           ? ((int)*s1H - 0)
-           : 0);
-}
-
 void utf16_to_utf8(const char16_t* src, size_t src_len, char* dst, size_t dst_len)
 {
     if (src == nullptr || src_len == 0 || dst == nullptr) {
diff --git a/libutils/include/utils/Unicode.h b/libutils/include/utils/Unicode.h
index 666b70f..61a1b4f 100644
--- a/libutils/include/utils/Unicode.h
+++ b/libutils/include/utils/Unicode.h
@@ -40,9 +40,6 @@
 // equivalent result as strcmp16 (unlike strncmp16).
 int strzcmp16(const char16_t *s1, size_t n1, const char16_t *s2, size_t n2);
 
-// Version of strzcmp16 for comparing strings in different endianness.
-int strzcmp16_h_n(const char16_t *s1H, size_t n1, const char16_t *s2N, size_t n2);
-
 // Standard string functions on char32_t strings.
 size_t strlen32(const char32_t *);
 size_t strnlen32(const char32_t *, size_t);