logcat: timed tests fail under load

Change-Id: Ic1cdf0509617720eef7a3ad0b17a3b6f88c9d87e
diff --git a/logcat/tests/logcat_test.cpp b/logcat/tests/logcat_test.cpp
index 0c75695..958948b 100644
--- a/logcat/tests/logcat_test.cpp
+++ b/logcat/tests/logcat_test.cpp
@@ -343,7 +343,6 @@
     signal(SIGALRM, caught_blocking);
     alarm(2);
     while (fgets(buffer, sizeof(buffer), fp)) {
-        alarm(2);
 
         if (!strncmp(buffer, "DONE", 4)) {
             break;
@@ -413,7 +412,6 @@
     signal(SIGALRM, caught_blocking_tail);
     alarm(2);
     while (fgets(buffer, sizeof(buffer), fp)) {
-        alarm(2);
 
         if (!strncmp(buffer, "DONE", 4)) {
             break;
@@ -484,7 +482,6 @@
     signal(SIGALRM, caught_blocking_clear);
     alarm(2);
     while (fgets(buffer, sizeof(buffer), fp)) {
-        alarm(2);
 
         if (!strncmp(buffer, "clearLog: ", 10)) {
             fprintf(stderr, "WARNING: Test lacks permission to run :-(\n");