KTL-2775 Remove shell command from the script

Author: Quattro8

.teamcity/documentation/builds/KotlinMultiplatform.kt

@@ -20,9 +20,6 @@ object KotlinMultiplatform: BuildType ({
         script {
             name = "Build documentation"
             scriptContent = """
-                #!/bin/bash
-                set -e -x -u
-                
                 docker run --rm -v %teamcity.build.checkoutDir%:/opt/sources \
                 registry.jetbrains.team/p/writerside/builder/writerside-builder:latest \
                 /bin/bash -c "export DISPLAY=:99 && Xvfb :99 & /opt/builder/bin/idea.sh helpbuilderinspect \