chore(rc,profile,aliases,completion,libs,functions): Remove shebangs from sourced files

These files are always sourced (never executed directly), so the
#!/bin/bash shebang is inert and misleading. Drop it consistently
across rc.d/*, profile.d/*, and aliases.d/*.

profile.d/anyenv

@@ -1,5 +1,3 @@
-#!/bin/bash
-
 # https://github.com/riywo/anyenv
 
 # git clone https://github.com/riywo/anyenv $HOME/.anyenv

profile.d/history

@@ -1,5 +1,3 @@
-#!/bin/bash
-
 # Customize history format
 export HISTSIZE=5000
 export HISTFILESIZE=20000

profile.d/keychain

@@ -1,5 +1,3 @@
-#!/bin/bash
-
 if (command -v keychain &>/dev/null); then
   eval "$(keychain --inherit any --quiet --noask ~/.ssh/id_{rsa,ed25519})"
 fi

profile.d/krew

@@ -1,5 +1,3 @@
-#!/bin/bash
-
 if (command -v krew &>/dev/null); then
 	export PATH="${KREW_ROOT:-$HOME/.krew}/bin:$PATH"
 fi

profile.d/lang

@@ -1,4 +1,2 @@
-#!/bin/bash
-
 # Define prefered LANG
 export LANG=fr_FR.UTF-8

profile.d/mail

@@ -1,4 +1,2 @@
-#!/bin/bash
-
 # Mail
 export MAILPATH=~/Mails/

profile.d/path

@@ -1,5 +1,3 @@
-#!/bin/bash
-
 # Customize PATH
 if [ -d $HOME/.bin ] ; then export PATH=$PATH:$HOME/.bin ; fi
 if [ -d $HOME/.local/bin ] ; then export PATH=$PATH:$HOME/.local/bin ; fi

profile.d/tsocks

@@ -1,5 +1,3 @@
-#!/bin/bash
-
 # Proxy
 if [ -x /usr/bin/tsocks ]
 then