Travis: libevent appears to already be installed on travis osx.

Abscissa · Abscissa · commit 0893aeb0133e · 2019-10-27T01:54:01.000-04:00
diff --git a/ci_setup.d b/ci_setup.d
@@ -35,14 +35,12 @@ int main()
         if(envGet("DB") == "mysql-5.6")
         {
             spawnShell("brew update").wait;
-            spawnShell("brew install libevent").wait; // Is libevent still needed on OSX?
             spawnShell("brew install mysql@5.6 && brew services start mysql56").wait;
             mysqlPrefix = "/usr/local/opt/mysql@5.6/bin/";
         }
         else if(envGet("DB") == "mysql-latest")
         {
             spawnShell("brew update").wait;
-            spawnShell("brew install libevent").wait; // Is libevent still needed on OSX?
             spawnShell("brew install mysql && brew services start mysql").wait;
         }
         else

Original file line number	Diff line number	Diff line change
`@@ -35,14 +35,12 @@ int main()`
`35`	`35`	`if(envGet("DB") == "mysql-5.6")`
`36`	`36`	`{`
`37`	`37`	`spawnShell("brew update").wait;`
`38`		`- spawnShell("brew install libevent").wait; // Is libevent still needed on OSX?`
`39`	`38`	`spawnShell("brew install mysql@5.6 && brew services start mysql56").wait;`
`40`	`39`	`mysqlPrefix = "/usr/local/opt/mysql@5.6/bin/";`
`41`	`40`	`}`
`42`	`41`	`else if(envGet("DB") == "mysql-latest")`
`43`	`42`	`{`
`44`	`43`	`spawnShell("brew update").wait;`
`45`		`- spawnShell("brew install libevent").wait; // Is libevent still needed on OSX?`
`46`	`44`	`spawnShell("brew install mysql && brew services start mysql").wait;`
`47`	`45`	`}`
`48`	`46`	`else`