Remove unused function GetPidByName()

Due to the fix b/132919954, this function is no longer needed.

Bug: 133223733
Test: builds
Test: All tests pass
    * First create `/data/nativetest64`:
    	adb shell mkdir /data/nativetest64
    * Then run:
        mmm -j frameworks/native/cmds/dumpstate/ \
	&& adb push ${OUT}/data/nativetest64/dumpstate_* /data/nativetest64 \
	&& adb shell /data/nativetest64/dumpstate_test/dumpstate_test
Change-Id: Id52455d8bb82909706e0b2606aa1811c9faf1d69

1 files changed, 0 insertions, 28 deletions

diff --git a/cmds/dumpstate/DumpstateUtil.cpp b/cmds/dumpstate/DumpstateUtil.cpp
index 97c8ae2045..4b69607156 100644
--- a/cmds/dumpstate/DumpstateUtil.cpp
+++ b/cmds/dumpstate/DumpstateUtil.cpp
@@ -378,34 +378,6 @@ int RunCommandToFd(int fd, const std::string& title, const std::vector<std::stri
     return status;
 }
 
-int GetPidByName(const std::string& ps_name) {
-    DIR* proc_dir;
-    struct dirent* ps;
-    unsigned int pid;
-    std::string cmdline;
-
-    if (!(proc_dir = opendir("/proc"))) {
-        MYLOGE("Can't open /proc\n");
-        return -1;
-    }
-
-    while ((ps = readdir(proc_dir))) {
-        if (!(pid = atoi(ps->d_name))) {
-            continue;
-        }
-        android::base::ReadFileToString("/proc/" + std::string(ps->d_name) + "/cmdline", &cmdline);
-        if (cmdline.find(ps_name) == std::string::npos) {
-            continue;
-        } else {
-            closedir(proc_dir);
-            return pid;
-        }
-    }
-    MYLOGE("can't find the pid\n");
-    closedir(proc_dir);
-    return -1;
-}
-
 }  // namespace dumpstate
 }  // namespace os
 }  // namespace android