qemu: Remove redundant DomainObjIsActive calls

The common idiom in the driver API implementations is roughly:

- ACL check
- BeginJob (if needed)
- AgentAvailable (if needed)
- !IsActive

A few calls had an extra !IsActive before BeginJob, which doesn't
seem to serve much use. Drop them

src/qemu/qemu_driver.c

@@ -1884,12 +1884,6 @@ static int qemuDomainSuspend(virDomainPtr dom)
     if (virDomainSuspendEnsureACL(dom->conn, vm->def) < 0)
         goto cleanup;
 
-    if (!virDomainObjIsActive(vm)) {
-        virReportError(VIR_ERR_OPERATION_INVALID,
-                       "%s", _("domain is not running"));
-        goto cleanup;
-    }
-
     cfg = virQEMUDriverGetConfig(driver);
     priv = vm->privateData;
 
@@ -2566,12 +2560,6 @@ static int qemuDomainInjectNMI(virDomainPtr domain, unsigned int flags)
     if (virDomainInjectNMIEnsureACL(domain->conn, vm->def) < 0)
         goto cleanup;
 
-    if (!virDomainObjIsActive(vm)) {
-        virReportError(VIR_ERR_OPERATION_INVALID,
-                       "%s", _("domain is not running"));
-        goto cleanup;
-    }
-
     priv = vm->privateData;
 
     if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
@@ -15903,12 +15891,6 @@ static int qemuDomainQemuMonitorCommand(virDomainPtr domain, const char *cmd,
     if (virDomainQemuMonitorCommandEnsureACL(domain->conn, vm->def) < 0)
         goto cleanup;
 
-    if (!virDomainObjIsActive(vm)) {
-        virReportError(VIR_ERR_OPERATION_INVALID,
-                       "%s", _("domain is not running"));
-        goto cleanup;
-    }
-
     if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
         goto cleanup;
 
@@ -18512,12 +18494,6 @@ qemuDomainFSTrim(virDomainPtr dom,
     if (virDomainFSTrimEnsureACL(dom->conn, vm->def) < 0)
         goto cleanup;
 
-    if (!virDomainObjIsActive(vm)) {
-        virReportError(VIR_ERR_OPERATION_INVALID,
-                       "%s", _("domain is not running"));
-        goto cleanup;
-    }
-
     if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
         goto cleanup;