Remove out-of-enum-range branch (LOG_ID_ANY).

Looks like a dead branch. This will block a future compiler upgrade.

```
    system/logging/liblog/pmsg_reader.cpp:188:16: error: integer value -1 is outside the valid range of values [0, 21
    47483647] for this enumeration type [-Wenum-constexpr-conversion]
      if (logId != LOG_ID_ANY) {
                  ^
    system/logging/liblog/include/private/android_logger.h:129:21: note: expanded from macro 'LOG_ID_ANY'
    #define LOG_ID_ANY ((log_id_t)-1)
                        ^
    1 error generated.
```

I checked all the callsites that kythe finds in cs.android.com, and none
of them call this function manually with a -1 paramater. I couldn't find
any other uses of LOG_ID_ANY. Prune this branch.

Found using a locally-built toolchain at tip-of-tree LLVM, which clearly
finds this with an improved diagnostic check.

Bug: N/A
Test: m libbufferhub
Change-Id: I527389573141c1887f64f22c983cc7ca4a323d73
2 files changed
tree: 644c7ebf01d89a68ce8485ad51a259522c2b3a95
  1. liblog/
  2. logcat/
  3. logd/
  4. logwrapper/
  5. rust/
  6. OWNERS
  7. PREUPLOAD.cfg
  8. TEST_MAPPING